Buzzetti alternator rotor puller M28x1.0 internal thread. Required for working on the alternator and underlying parts as well as changing crankshafts and bearings. The puller is screwed into the rotor and pulls using a tension screw. Rotors that don`t come unstuck can be eased along with light hammer blows to the tension screw. Warning: be sure to check the thread specification of the rotor before use.