FEATURES: Application Main Shaft Sprocket Wrench Tool fits for all Harley front transmission pulley 1 7/8 socket sprocket, Compatible with 1936 – 2006 Big Twins and 1999-2006 Twin Cam, except 06 Dyna. Nice Design The Main Shaft Pulley Socket Tool designed to remove and install the 1 7/8'' nut, back of tool has a 1/2" Drive to fit 1/2" ratchet or breaker bar, with a Threaded Bushing. Not recommended for impact gun use. The tool is 5.5 inch deep. Function .