CR-L & CR-R To easy installation,We have divided the mtb pedals on the left and right with signs,CR-L for left; CR-R for right. Before you install the new pedals, look for the 'L' and 'R' marking on the axle. International Standard 9/16" spindle fits for BMX, MTB, Mountain Bike, Hybrid bike, Old School,Cruiser, Cyclocross Bike, Dirt Jumper, Folding Bike, Road Bike- Touring, Track Bike, Unicycle, Urban Bike. Ten Anti-Skid Nails 5 Anti-skid nails on the surface provide more security on the bmx bike pedals and hold your feet in place. The studs on the mountain bike pedal effectively prevent your shoes from sliding off. Durable Material: These mountain bike pedals are made of high-strength aluminum alloy, perfect for aggressive trail riding and jumping. The carbon fiber bushing around the spindle makes the pedals lightweight, durable, and anti-corrosion, ensuring smooth, noise-free spinning. Great Anti-Skid: Featuring 5 stainless steel spike screws with threaded pins, these pedals offer a powerful grip for safe cycling. The carved surface enhances anti-slip ability, ensuring efficient riding. Lubricated Bearing: Built with one sealed bearing and one DU bearing, these pedals remain lubricated and stable, perfect for long-distance riding. The end cap keeps bearings clean from water and dust. Wide Bike Platform: With a 98mm length and 90mm