The Shimano PD-RS500 SPD-SL Pedals has a wide pedal platform for improved foot/pedal stability. Shimano PD-RS500 SPD-SL Pedals Features Spd-sl road pedal for entry level use at a value for money price low maintenance sealed cartridge axle unit the low profile platform with open design allows for easy access and cleat adjustments easy to clip into and release but with stable fit for maximum power transfer to the pedals wider cleat and binding mechanism for better shoe/pedal contact than traditional spd systems