The PD-M 520 SPD Pedals perform particularly well off-road. The reason for this lies in the lightweight aluminum body and tough chromoly axle, which combine for great power transmission. In addition, the entire pedal is very robust and durable. The double binding means you dont have to spend ages trying to get yourself clipped in. The release tension can be adjusted according to your own needs and thanks to the open construction, dirt does not accumulate so quickly. With the PD-M 520 SPD pedals at your feet, racing and long tours are twice as fun. ;"