this is the version zero cromoly featuring shaft stainless steel of the highest quality, resistance and lightness. in fact, the weight of each pedal is only 108 gr. the zero is one of the most advanced road pedals in the world. account with numerous unique features like the angle adjustment of float that allows a freer foot movement (which can help to prevent injury). it is possible to adjust the pedal until it fixed (non-floating). the low profile of the pedal allows a greater inclination than the other retto.com copyright marks. moreover it has studied the outline of the pedal in the wind tunnel. speedplay zero range can only be combined with specific cleats zero. speedplay is one of the leading and most specialized in pedals for professional and semi-professional use. finishes, technology, materials and designs are the best brands of high performance. speedplay zero model has been updated with the new v.2 speedplay cleats. the new v.2 coves remain compatible with previous versions of the same model of pedal, but incorporated some changes, such as a certain degree of curvature so that better adapt to the soles of shoes of road. the coves v.2 must be used with spare parts of the same model v2. features: -weight: 216 gr. -chromoly shaft. -adjustable buoyancy. -possibility to set the pedal. -use only with speedplay zero cleats. -made in usa. -compatible with all retto.com shoes. -includes coves speedplay v.2.