Motion Pro Crank Shaft Puller Features Precision tool used to install press-in crank shafts into an engine case Time saving method maintains crank shaft true during installation Universal steel nut adapter works on virtually all crankshafts 25mm and 40mm billet aluminum face plate adaptors ensure crankshaft is pulled perfectly straight into bearings Reversible pull stud with both M10x1.25 and M12x1.25 threads Eliminates the need for a shop press to install crankshaft Machined brass thrust washer for extra durability