Gotaout Super Light Aluminum Silver Bike Pedals for MTB Road BMX Bicycle Size: 4" x 3" x 1" - comes in pair Material: Made of high quality aluminum, good abrasion resistance and corrosion resistant performance. Advantage: The antiskid teeth design, better grip, your feet feel more comfortable. Bearing structure, the degree of lubrication and the strength are greatly improved. Installation: The pedal axis screw distinguish left and right, "R" "L" mark the direction of right and left. We suggest to use 15mm professional open end wrench to install the pedals. Suitable for: BMX, mountain bikes, road bikes, fixed gear bikes, etc.