Easy To Install:CR-L for left; CR-R for right. Sealed bearing bicycle pedals protect spindles from water and dust which will cause noise and other problems, let you enjoy cycling in raining or climbing. Anti-Skid Nail:Anti-skid nails on each side provide more secure on the pedals and hold your feet in place. Even if they are covered with a thick layer of mud after a muddy ride, you don't worry your feet slipping off the pedals. 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 - Fixed Gear 2 configuration:3 bearings and needle roller bearing can be chosen.
