OZUZ BMX MTB Mountain Bike Bicycle Aluminum Pedals Three Sealed Bearing Shock Absorption Pedal 9/16" Material: T6061 Aviation Aluminum Alloy Structure: Three bearing ,Four shock absorber,Lots of antiskid nails Processing Craft: Made of exquisite CNC Assembly Dimensions Of Alex: 9/16 inch & PW-3 Wrench (Hexagon installation and removal, simple to install, easy to replace) Light Weight and Ultra-Thin Size: 0.48lb, 0.9x3.98x4.80inches each