Specifications Hign-concerned Chemical:None Type:Self-locking Pedal Size:103*86mm Model Number:RK09 Pedal Category:Self-locking Pedal Pedal Device Category:Bearing Use:BMX,Mountain Bikes Material:Aluminum/Alloy Origin:Mainland China Product Description There are two functions for locking and flat pedaling. One side SPD is locked, the pop-up bracket, the spring is lighter, and it is easy to lock. The rider can adjust the locking and unlocking tension settings. The flat side is convenient for riding when it is not locked, and it has the function of Good grip. The main body is made of aluminum alloy material, CNC processing, scratch-resistant, wear-resistant, and high strength. Fully sealed bearings protect the shaft, avoid rain and dust from entering, and extend the service life. There are 8 anti-skid nails on the left and right to strengthen the gripping force; "L" stands for left and "R" stands for right Durable chromium-molybdenum steel shaft, universal screw diameter 14mm (use 6mm inner hexagon for installation.)