Parts

A carbon road wheel with a 37mm depth that pairs our latest rim profile with Pro-level pricing to deliver an easy upgrade in speed, weight, and stability. Fast and lightweight The versatile Aeolus Pro 37 is the perfect wheel for climbs, crits, cross, and more. The strong, lightweight Pro-level OCLV Carbon allows for faster, more stable rim profiles—and the silky smooth hubs rolling on DT Swiss 350 internals deliver a quick-rolling ride wherever you roam. All Bontrager carbon wheels are warrantied for life for the original purchaser and come with the added protection of carbon care. If you damage your wheels while riding in the first two years of ownership, we'll replace them. It’s that easy. Product details - OCLV Pro carbon offers an optimized blend of weight, strength, and durability - All-new 37mm depth brings the benefits of aerodynamics to lightweight design - Tubeless Ready (TLR) rims allow for quick transition to tubeless system - 37mm depth OCLV Carbon rim (28mm outer, 21mm inner width), DT Aerolite spokes 24/24, DT Pro Lock nipples - Center lock disc hubs with 12mm thru-axle front and rear, DT Swiss 350 hubs with 18 point engagement - Compatible with Shimano 10/11 speed, SRAM 10/11 freehubs, 12sp available separately - Includes TLR rim strip, TLR valve, and traditional rim strip - Warrantied for life, no rider weight limit

A carbon road wheel with a 37mm depth that pairs our latest rim profile with Pro-level pricing to deliver an easy upgrade in speed, weight, and stability. Fast and lightweight The versatile Aeolus Pro 37 is the perfect wheel for climbs, crits, cross, and more. The strong, lightweight Pro-level OCLV Carbon allows for faster, more stable rim profiles—and the silky smooth hubs rolling on DT Swiss 350 internals deliver a quick-rolling ride wherever you roam. All Bontrager carbon wheels are warrantied for life for the original purchaser and come with the added protection of carbon care. If you damage your wheels while riding in the first two years of ownership, we'll replace them. It’s that easy. Product details - OCLV Pro carbon offers an optimized blend of weight, strength, and durability - All-new 37mm depth brings the benefits of aerodynamics to lightweight design - Tubeless Ready (TLR) rims allow for quick transition to tubeless system - 37mm depth OCLV Carbon rim (28mm outer, 21mm inner width), DT Aerolite spokes 24/24, DT Pro Lock nipples - Center lock disc hubs with 12mm thru-axle front and rear, DT Swiss 350 hubs with 18 point engagement - Compatible with Shimano 10/11 speed, SRAM 10/11 freehubs, 12sp available separately - Includes TLR rim strip, TLR valve, and traditional rim strip - Warrantied for life, no rider weight limit

An ultralight 37mm depth carbon road wheel that delivers speed and stability on climbs, crits, classics, and more. The ultimate road wheel Faster. Lighter. More stable. The ultralight Aeolus RSL 37 is the ultimate carbon road wheel for climbs, crits, and classics. RSL-level OCLV Carbon is lighter and stronger, allowing for a faster, more stable 37mm rim profile that is lighter than shallower wheels and faster than deeper wheels. Ultralight hubs with DT Swiss 240s internals and a Ratchet EXP 36-freehub keep everything rolling smooth. All Bontrager carbon wheels are warrantied for life for the original purchaser and come with the added protection of carbon care. If you damage your wheels while riding in the first two years of ownership, we'll replace them. It’s that easy. Product details - OCLV RSL Carbon is lighter and stronger, and allows for faster, more stable rim profiles - RSL optimized 37mm depth provides leading speed, stability, and weight - Tubeless Ready (TLR) rims allow for quick transition to tubeless system - 37mm depth OCLV Carbon rim (28mm outer) DT Aerolite spokes 24/24, DT ProLock nipples - Smooth rolling, ultralight DT Swiss 240s internals - Center lock disc hubs with 12mm thru-axle front and rear, axle swap available for front QR and rear 15mm - Includes TLR rim strip, TLR valve, and traditional rim strip

Bontrager's Ajna Elite Saddle is a versatile saddle, perfect for aggressive racers and everyday riders alike. It's got some of the most advanced women's-specific comfort and support features, too. The wide cutout and shaped nose yield stable comfort while riding, and the CRZ+ cutaway extends through saddle nose enhancing soft tissue protection. The size-specific curvature and medium-weight padding ensure excellent support without pressure on sensitive areas. This 270mm long perch is also available in three widths for a custom fit. A carbon-reinforced shell and hollow titanuim rails keep the weight down, too.

The Bontrager Comp VR-S road bar offers a shorter drop and reach, while still retaining the classic Variable Radius shape, providing quick, comfortable transitions from the hoods to the drops for sprints. - Custom-butted, 6061-T6 alloy construction - Variable Radius-Short (VR-S) bar shape features a shallow drop with shorter reach, optimized for riders who prefer a less aggressive posture - Compatible with clip-on aero bars - Shot-peened finish increases fatigue life - Laser-etched brake lever position lines for spot-on control setup

The Montrose Comp Gel saddle provides the perfect blend of performance and comfort to let you ride longer and more confidently. It features a gel infused cutout and suspended rails, all with an inForm BioDynamics design. The Montrose Comp packs a ton of comfort into a versatile Posture 2 performance saddle. - Posture 2 forward pelvic rotation for flexible athletes in aggressive position - Soft cushion gel padding provides ultra comfort - Cutout channels on bottom of shell for added compliance at rear of saddle - Contour Relief Zone Plus (CRZ+) full saddle cutaway enhances soft tissue protection - Size Specific Curvature ensures each saddle is designed specific to its width - Hollow chromoly rails - Nylon composite shell

Smooth rolling and confidence inspiring Key features - Stacked Lacing - Provides a better spoke bracing angle for a stiffer wheel - Tubeless Ready (TLR) rims allow for quick transition to tubeless system upgrade - Offset spoke bed reduces wheel dish for stiff and stable performance - 6061 alloy rim 23mm outer, 19.5mm inner width, 3 pawl hub - Shimano 10/11, SRAM 10/11, Campagnolo (freehub sold separately) - Includes Tubeless Ready (TLR) rim strip, TLR valve stem, internal cam quick release - No rider weight restrictions

Trim some weight and add some style to your ride with Bontrager's Race X Lite OS Stem. Made from forged 7050-T6 aluminum, this stem is exceptionally light and strong. In fact, it's equally suited to the sharp impacts of mountain biking as it is to the long-mile rigors of the road. And, its shot-peened finish offers exceptional strength while the 4-bolt faceplate makes installation easy, and the opposed-bolt steerer clamp is carbon friendly.

Bontrager's Satellite Plus Grips boast a dual-compound rubber for a great feel and a large, ergonomic contact area for support and comfort. They also feature an integrated clamp that locks them on the handlebars so that they can't slip or move.

Remain confident in your grip and keep riding through all weather conditions with the Supertack Handlebar Tape. • Super tacky texture for no-slip grip • Ideal stretch for quick and easy installation • Shock-Absorbing foam for added comfort • Finishing strips and reflective Bontrager bar end plugs included • Adhesive backing • Microfiber

Take the long way with the XR Endurance Comp grip. A contoured shape provides comfort and support, while an opposing tread pattern ensures your palms are padded and your fingers remain confidently in place. This Dual-Density grip features a lightweight, durable lock-on design that securely attaches to any bar. Key features - Contoured design comfortably supports palm to decrease fatigue - Opposing tread design absorbs shock in palms with a biting grip in fingers - Dual-density compound design provides secure grip, control, and comfort - Continuous tread design optimizes grip for moisture management and shock absorption - Lock-on clamp securely holds grip core to bar, eliminating slipping

XR1 Expert is the fast-rolling, race-worthy, Tubeless Ready cross country tire engineered for quickness on dry and dusty trails. Lead the pack with XR1's lightweight rubber compound, tightly spaced central knobs for predictable cornering, and an open outer tread design for high-speed traction and grip on dusty surfaces. Key features - Fast-rolling and predictable cornering - Excels in hardpack and loamy conditions - Use Bontrager TLR sealant for worry-free setup and puncture protection - Inner Strength sidewall protection is lightweight, supple, and strong

If you have to pick one A versatile XC tire with excellent traction provides confidence for most trail conditions. Versatility is the name of the game for the XR3 Comp mountain bike tire. It's the quickest, highest-value rubber for the widest variety of trail conditions—from hard-packed singletrack to loam and everything in-between. - A versatile trail or race tire that excels in a wide variety of conditions - Aggressive side knobs provide consistent cornering and traction across multi-trail surfaces

The Grand Prix 5000 is the best all-rounder in the field, brought to a whole new performance level. Ride faster, more comfortably, and with increased puncture protection. Its Active Comfort Technology absorbs vibrations and smooths your ride. Lazer Grip technology, designed to make you one with the road, features a lasered micro profile structure that expands over the tire’s shoulder and provides outstanding cornering. The Vectran Breaker is lighter, more flexible and protects more effectively against cuts than comparable nylon. With incredible tear resistance at a very low weight, it possesses exactly the right properties to be a premium puncture protection insert, while not adversely affecting rolling resistance. The Grand Prix 5000 Tubeless—made to make you better. With Continental's unique and legendary BlackChili tread compound, produced only in Germany, they have revolutionized the sport of cycling. This compound answers the eternal question of the best balance of grip and rolling resistance for cycling. Regular test wins confirm the measurable and noticeable advantages for cyclists, established in both the lab and on the road. The latest polymers, as well as specially developed carbon black particles and filler materials, guarantee ultimate performance.

- Lightweight alloy body with steel cage - Toe-clip compatible - 9/16-inch Cr-Mo axle

- 0.9mm wall thickness - 700c x 18 – 25 = 27 x 1 - 700c x 28 – 35 = 27 x 1-1/8, 1-1/4

The Delta pedal is upgraded with a stainless abrasion plate to decrease direct scratch to pedal body, which increases durability. In addition to that, the material has been changed to thermoplastic which makes it lighter weight. The E-PR73ST features low stack height which allows greater ground clearance as well as increased pedaling efficiency. - 85 x 94 mm - Fiberglass-reinforced thermoplastic, enclosed mechanism, tension adjustable with gauge - 9/16"

- Left and right bottom bracket cups with standard bearings for FSA MegaExo cranks - BB-9050 is for 24mm spindle 68/73mm MTB K-Force and Team Issue cranks - BB-8681 for K-Force Light (a non-ceramic option) and SLK Light Road MegaExo cranks (BB-8681 bearing covers have been redesigned so that the spindle now rides directly on the bearing itself) - BB-7000 is for 24mm spindle 68/73mm shell MTB Gravity Lite, Moto X and Afterburner cranks - BB-7000 is for 24mm spindle 83mm shell MTB Gravity Lite cranks - BB-6200 is for 24mm spindle 68mm shell Energy, Gossamer and Omega No Bolt Design cranks - BB-6000 is for 24mm spindle 68mm shell Energy, Gossamer and Omega cranks - BB-4000 is for 19mm spindle 69mm shell Omega cranks - BB-1000 is for 19mm spindle 68/73mm MTB Gamma cranks - 1.37" x 24tpi (English threads) or M36 x 24tpi (Italian threads)

ISM's Adamo Road Saddle delivers excellent support and comfort for road riding and also racing time trials and/or triathlons in the aero position. This unique seat has a split-nose design with a large cutaway to eliminate pressure and increase your pedaling efficiency. It has generous gel and foam padding for cushioning. You also get long chromoly rails for plenty of fore/aft adjustment, a spot for hooking the seat on the bike rack during triathlon transitions and this fine seat meets or exceeds the rules of road racing and triathlon too.

- High quality sealed cartridge bearings with steel cups - Traditional square JIS 2-degree taper crank-arm interface - 68/73mm English (BC1.37 x 24tpi - RH/LH). Compatible with IRD retrofit cups (sold separately), RD-419

- Replacement cable for the Jagwire Pro Dropper kit - 0.8mm inner cable is more flexible and has lower friction than typical shift inner cables - An easy way to reduce the force required to activate a dropper post remote lever - Perfect for dropper seatposts with "stealth" cable routing and tight housing bends - Includes 2x heat-shrink shims - For use with dropper seatposts ONLY - Length: 2000mm

- X101: hi-performance, chamfered, anti-drop, lightweight, Singlespeed chain for Mountain, BMX, Fixie, Track applications - Z410HD: heavy duty model has thicker sides plates for 25% higher tens

- Stretch-proof, super-narrow chain for use with 10-speed Campagnolo/Shimano/SRAM - Use: Mountain/Road - Size: 11/128-inch - Width: 5.9mm - Weight: 273 grams - 116 links

Kenda K-Rad - Checkerboard-shaped knob design - Knurled tread surface for traction and control - Ribbing between knobs strengthens the casing - Kenda endorses the use of fluid based sealants only in specifically designated Kenda sealant compatible tire

Discover the world of clipless pedals with the KEO CLASSIC 3. The easily adjustable tension makes clipping in and out smooth and simple, with the ability to increase tension to fully appreciate the pedal and all its advantages. - Technology: Spring - Cleats: Keo Grip - Retention: 8 to 12 - Body: Composite - Spindle: Chromoly - Platform Material: Composite - Platform area: 400mm² - Platform width: 50mm - Q Factor: 53mm - Stack height + cleats: 17.8mm (11.5 + 6.3mm) - Weight (pedal): 140g - Weight (pair + cleats): 350g

Tough enough for the meanest streets - Durable enough for urban assault, park riding, commuting, cargo bikes, etc. - Grooved slick tread design - Wrap-around tread pattern As the original urban assault tire, we designed the Hookworm to take the abuses of the most aggressive street riders. Bead-to-bead tread provides durability and traction whether you're dropping staircases, grinding rails, or riding in your local skate park.

Full metal construction provides stiffness and durability in this Shimano 9-speed road compatible front derailleur. - Full aluminum construction - Compatible with 9-speed Shimano road drivetrains - Designed for use with 52/42/30T chainrings

- 2-ply rubber shield fits between tire and tube to prevent flats

- Pirelli's SmartNET Silica grants both rolling efficiency and wet grip - FGD and ICS technologies-powered tread design provides sensational handling confidence and performance - SmartNET Silica and the special aramid fiber puncture resistance belt allow you to enjoy extensive mileage and long-term reliability

The Pro Ergonomic grips feature a comfortable ergonomic shape and are designed to match with the Pro ergonomic bar ends (sold separately). - Dual compound material - Sleek anodized alloy lockring - Diameter: 32mm - Length: 137mm

The Lock On Sport grips from Pro offer supreme control and confident grip with dual compound material construction and a pressure-optimized core for enhanced pressure relief. - Sleek anodized alloy lockring - Diameter: 32mm

The Problem Solvers Double Chainring Bolts include 5 chainring bolts and nuts that are 8mm wide. This is the right size for most double-chainring setups. These chainring bolts are made of either aluminum, stainless steel, or chromoly.

Designed for the next generation of drivetrains—and the next generation of riders. The SRAM Force XG-1270 cassette is optimized for electronic shifting and features our X-Range gearing technology. Smooth, precise shifts, from 10T on up. - X-Range gearing gives you more range and a smoother gear progression, so you’re always in the right gear - MINI CLUSTER construction reduces weight and increases durability - Designed to work with an XDR driver body Cogs: - 10-26T: 10, 11, 12, 13, 14, 15, 16, 17, 19, 21, 23, 26 - 10-28T: 10, 11, 12, 13, 14, 15, 16, 17, 19, 21, 24, 28 - 10-33T: 10, 11, 12, 13, 14, 15, 17, 19, 21, 24, 28, 33 - 10-36T: 10, 11, 12, 13, 15, 17, 19, 21, 24, 28, 32, 36

SRAM's PG-730 7-Speed Cassette is the perfect replacement for your worn-out gears. It features a rugged steel construction for awesome durability and SRAM's PowerGlide technology for smooth, precise shifts throughout its 12-32 tooth range.

Cable is coated with a durable low-friction polymer. - Dupont Tefzel coating is more durable than previous coated cables - Length: 2300mm - Diameter: 1.2 - Cable Head: Shimano/SRAM - Double Ended: No

Maximum range, minimum fuss. This 12-speed 11-44T cassette provides 2x range in a 1x package and fits on a traditional 11-speed driver body for broad integration. The smooth cog progression keeps jumps between cogs tightest when it's time to go fast, with more meaningful gaps for climbing. - 12-speed - 400% range gives the coverage 1x riders want - Cog sizes: 11, 12, 13, 15, 17, 19, 21, 24, 28, 32, 38, 44 - For use with XPLR 1x rear derailleurs - Compatible with Flattop chains - For 11-speed road driver bodies

Shimano's Claris cassette is an incredible value for your 8-speed drivetrain. This cassette comes in a range of sizes to suit your riding style and terrain.

Shimano's XT Ice-Tech rotors utilize their patented Center Lock mounting system for super quick and easy mounting. These rotors use an aluminum core with steel outer plates which reduces the temperature of the braking surface. This means quieter braking, and more importantly, less fade on long downhill sections and improved pad life. The various sizes give you total freedom of choice over the delicate balance of power versus weight.

- Deore/Tiagra 9-speed compatible - 3/32-inch - 116 links

Shimano's Ultegra 6800 chainrings provide confidence-inspiring shifting and category-defining speed. Cold-forged aluminum comprises these super-stiff, hollow outer rings, and Shimano's unique system of ramps and pins means lightning fast shifts are at your command. - Bolt circle diameter: 4-bolt 110mm asymmetric - 50T pairs with 34T inner ring - 52T pairs with 36T inner ring - 53T pairs with 39T inner ring Inner rings sold separately

When it’s time to update the flagship XTR pedals, we look at every detail under a microscope. Off-road racing demands speed, focus, and control. And that’s exactly what the PD-M9100 delivers. Increased drivetrain efficiency, an intuitive and seamless interface, and predictable steering and traction control are the benchmarks of the M9100 series pedals. The M9100 are the weapon of choice for WC racers worldwide. BETTER MUD CLEARANCE - Cylindrical contact area sheds mud even better for consistent stepping-in & out performance and rider confidence. ADDED EFFICIENCY + DURABILITY - Increased axle strength for long service life. M9100 comes in two axle lengths – 52 mm and 55 mm crank to pedal center. BETTER MUD CLEARANCE - Wider edge-to-edge contact area provides solid shoe-to-pedal interface, transmits power more efficiently for faster and more consistent acceleration, and better bike control.

The Product that Started a Tubeless Revolution Inside this simple bottle is a product that changed cycling. Today's tubeless systems rely on the lighter, more reliable, self-sealing performance of Stan's Tire Sealant. Just two ounces of Stan's in a converted standard tire or tubeless tire can repair punctures up to 1/4-inch almost instantly to keep you rolling. Longer-lasting Stan's Tire Sealant is formulated to stay liquid in tires with even thin casings for up to seven months. Arid conditions require more frequent monitoring of sealant levels, but anti-freezing agents in our special formula allow Stan's Tire Sealant to be used in temperatures as cold as -30° F. One quart will convert up to 16 tires. - First choice of riders around the world for tubeless conversion and flat prevention - Seals punctures up to 1/4-inch (6.5mm) quickly - Stays liquid 2-7 months for long-lasting protection - Premium low-viscosity formula resists freezing to work in environments as cold as -30° F (-34° C) - Natural materials, safe for the environment - Can be injected through valve stems with removable cores compatible with tubes and tubular tires

For nearly three decades, Terry has been working with all levels of riders to solve all types of saddle comfort issues. Introduced in 1999, the Italian-made Butterfly represents the best in all that research and development. The Butterfly Ti has a textured leather cover that will wear beautifully over time and keep you solidly planted on the saddle. Wider in the rear than typical race saddles for good support of a woman's sit bones; completely cutaway through the nose and mid-section, making it flexible and comfortable against soft tissues; low profile, flat top with injection molded foam that's stiff enough to give you more power for pedaling. - Debossed butterfly graphic - Textured leather cover - Signature Butterfly cutaway through center of saddle for pressure relief - Length x width: 262mm x 155mm - Weight: 248 grams; 8.7 ounces - Rails: ti-316

A layer of gel across the top gives an additional level of relief to the Cite X Gel. This saddle was designed for the recreational rider who spends a half day on the bike or less, rides nearly upright with lots of weight against the saddle, prefers the closest thing to a pillow, or has significant lower back pain. A completely seamless, heavily contoured top with large cutaway is guaranteed to hit and miss in all the right places. Shock-absorbing elastomers molded into the saddle base create the effect of springs without any mechanical devices or additional weights. They also help eliminate vibrations from road or surface that ordinarily get transferred straight to the spine. - Length x width: 249mm x 175mm - Weight: 454 g / 16.0 oz.

Grips are a key point of contact between you and your bike. Comfortable grips are a must-have. Product details - Designed for use on kids' bikes without shifters - Set of two grips Specifications - Length: 107mm - Diameter: 22.2mm - End Type: Closed - Lock-on: No - Material: Kraton Rubber

Handlebar tape with extra-tacky texture, classic perforation, and a thinner profile that lends a better grip on road rides. SUPER TACKY (IN A GOOD WAY) Confidently ride in all conditions with the no-slip grip of our Perf Line Handlebar Tape. This tape adds an extra layer of comfort with shock-absorbing foam, and keeps your bike looking classy and sleek with perforated details and a thinner profile. PRODUCT DETAILS - Super-tacky texture offers a no-slip grip - Classic perforated styling adds texture and looks clean - Ideal stretch allows quick and easy installation - Shock-absorbing foam elevates comfort - Finishing strips and reflective Trek bar end plugs included - Adhesive backing simplifies installation - Thinner profile for a sleek look - Perf Line Tape has a thickness of 1.5mm

- Double-sided tubular tape for installing tubular tires with no mess or waiting - Special activated surface of gluing tape makes installation and centering of a tubular tire on a rim very fast and easy

BREAKTHROUGH POWER Built on the cutting-edge SPEEDPLAY pedal platform, POWRLINK ZERO delivers reliably accurate power and cadence data in a race-proven pedal system. This powerful combination creates an unrivaled power pedal that helps cyclists optimize performance to break through to the next level. A POWERFUL COMBINATION POWRLINK ZERO combines proven sports science and years of industry-leading research with the superior adjustability, increased power transfer, reduced weight, and enhanced aerodynamics of the SPEEDPLAY platform to create a pedal system that delivers a distinct performance advantage. BETTER YOUR BEST Accurate to +/- 1%, POWRLINK ZERO’s internal gyroscope removes cadence variation to measure power output more precisely. Combined with Wahoo’s sports-science based algorithms, cyclists get accurate values they can use to achieve next-level performance gains. LASTING POWER POWRLINK ZERO is made with premium materials for superior strength-to-weight ratio – making it perfect for enduring efforts. In addition, the rechargeable battery lasts up to 75-hours per charge to give you the power to go long. Really long. In the box - Left and Right Power Pedals - Washer (x2) - Cleat Assembly - Screw Packet - Charging Cable and Clips - Quick Start Guide - Important Product Information Guide Additional Tools Required for Assembly: #1 and #2 Philips Head Screwdriver and 8mm Allen Wrench"

Jagwire's Brake or Shift Cable Tips are made of lightweight, corrosion-resistant and durable aluminum and are the right size to nicely fit over the ends of up to 1.8mm-diameter cables. These caps are crimped in place on the cables to prevent fraying and ensure your cables last a long time. The tips come in colors to add a little style to your bike.

- Individual vulcanizing patches in bulk - Cement and sandpaper sold separately

Parts for repair and maintenance of DT Swiss hubs. - DT Swiss Shim Ring: for Star Ratchet Hubs with 26mm OD Driveside Bearings

Keep your skewers properly situated with these quality skewer springs from Salsa.

Shim spacers can be placed between bearing and compression cover in IS headsets to fine tune the fitment.

Jagwire's Aluminum Housing Connectors allow joining two sections of the same-size cable housings together in case you only have shorter sections and you need to make a longer one. It comes in 4 and 4.5mm diameters. Match the diameter of the housing sections on your bike. - Comes in a pack of 10

The buyer's choice for wheel builders looking to save weight. ProLock nipples contain a special adhesive compound (by Loctite) which is activated when a spoke is threaded into the nipple, forming a durable bond. - 32 nipples weigh approximately 30 grams

- Cold forged 2.0mm 304 stainless steel with rolled threads - Nipples sold separately - 213g (32 spokes @ 262mm) - Bag of 50

- Straight gauge 2.0mm with cold forging technology - Chrome nickel stainless steel with rolled threads. Black surface treatment resists scratches - 222g @ 32h/265mm - Box of 72 - Nipples sold separately

Type: Patch Cement Size: Individual tube

- Cold forged 304 stainless steel with rolled threads - Lightweight 2.0mm/1.7mm/2.0mm double-butted form - Nipples sold separately - 172g (32 spokes @ 262mm) - Bag of 50

- Cold forged 2.0mm 304 stainless steel with rolled threads - Nipples sold separately - 213g (32 spokes @ 262mm) - Bag of 50