Due to the fact that all the energy that goes into cycling is transferred via the pedal, shoe and cleat, it is imperative to have your cleats properly installed. Failure to do so leads to loss of power, efficiency, and possible injury. The TP1 is the first ever tool for precise installation of cleats on cycling shoes. Fits SPD-SL style cleats Includes handbook on basic leg/ foot ergonomics and biomechanic consequences | Ergon | Spd-Sl Cleattool Spd-Sl