Speedplay pedals are incredibly lightweight thanks to intelligent engineering. The engagement mechanism is housed in the cleat not the pedal. This lets you have a double sided pedal but only carry one mechanism (rather than one on each side of the pedal).easy dual sided entryhalf the weight of most clipless systemsunsurpassed cornering clearanceon-centring free float minimises potential for knee strainlow stack height positions the foot closer to the pedal axisunrestricted free float 28 degree release angle 3 or 4 hole compatible 198gstainless steel spindle Cleats Included