General description This Laser Tools Alternator Tool is designed for use on Bosch alternators with free wheel pulleys. It is compatible with various vehicle brands including Audi, BMW, Ford, Skoda, Mercedes-Benz, and Volkswagen. This two-piece tool is essential for dismantling and assembling the free wheel pulley during alternator or pulley changes. Technical specifications M10 Spline x 1/2""D 33 teeth union nut 17mm spanner required