The Shimano PD-M540 SPD bike pedals boast an open pattern design, aiding in the easy removal of mud for more relaxed cycling. Features & Benefits Classic SPD reliability and performance Low-maintenance sealed-bearing cartridge axle Adjustable entry and release tension settings Better mud and debris shedding than any pedal in its class Chrome-moly spindle Specifications PEDAL AXLE MATERIAL Chromoly Steel SERIES Non-Series TYPE SPD GENERATION Non-Series CARTRIDGE AXLE X PEDAL BODY MATERIAL Aluminum AVERAGE WEIGHT 352g