DURABLE:Rugged nylon fiber surface+high strength Cr-Mo spindle bike pedals, which has shock-proof, abrasion and corrosion resistance SIZE:4.30(L)*3.94(W)*0.98(H)inches,0.79bls each pair,moer fitted to the soles,big tread bicycle pedals provide a more comfortable ride experience,make the ride safer 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. Product Description 3 bearings / needle bearings 2 configurations, three bearings / needle bearings Replaceable Pins The hex-head threaded traction pins are replaceable, you can replace them whenever necessary. There are 16 hex-head threaded traction pins per side for providing sufficient grip and control while being the easiest to get off of in the event of a crash. CR-L & CR-R CR-L for left pedal and CR-R for right pedal. Before you install the new pedals, look for the 'L' and 'R' marking on the axle. 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. Read more