SHIMANO PD-R550 SPD-SL Road Bike Bicycle Pedals (Clipless, SM-SH11 cleats) Wide lightweight resin body provides large shoe contact area to maximize power transfer and support whilst reducing weight 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