Motion Pro is dedicated to producing the most versatile, unique and durable products for professional and home use. Motion Pro tools are designed to be simple to use, yet durable enough to withstand the harshest conditions. One of their goals is to offer tools of convenience. Do it right the first time with Motion Pro Tools. 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. 25 mm and 40 mm 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. Eliminates the need for a shop press to install crankshaft. Machined brass thrust washer for extra durability.