Save time pressing crankshafts into the engine case with the universal Crankshaft Puller. Universal steel nut adaptor works on virtually all crankshafts. Eliminates the need for a shop press to install crankshaft. 25mm and 40mm billet aluminum face plate adaptors ensure crankshaft is pulled perfectly straight into bearings. Reversible pull stud with both M10 x 1.25 and M12 x 1.25 threads.