Use laser cutting, electric discharge, wire cutting and further processing the parts by CNC machine tool, in order to guarantee the accuracy. Hardened and tempered for maximum durability. Professional quality. Blow moulded plastic case keeps all the tools organised and easy to transport. Used to replace free wheel pulleys on Bosch and Magnet Marelli type alternators. Suitable for Audi, BMW, Fiat, Ford, Mercedes, Renault, Seat, VW and Porsche.