Whether cruising down a paved trail or ripping up the singletrack, Shimano's PD-M520 MTB SPD Bike Pedal brings optimal pedaling efficiency and power transfer to our ride. The compact body design features an open binding, providing an easy entry and optimized engagement, and features a binding mechanism that quickly sheds mud and debris to offer reliable performance in any weather condition. Designed to be ultra low-maintenance, Shimano added a strong Chromoly spindle and a sealed cartridge axle for added durability.