This a new old stock factory Ammco 9401461 pulley (3/4" center hole) and pin kit for 3000, 4000, 4100, 7000, and 7100 brake lathes. It's been sitting on my shelf for 25+ years (we were a factory service center) and the original box fell apart so it ships in a padded envelope. Instructions included. Hennessy has since superceded that part number to 907784-1. I've found these listed online for $72-$170. Please check out the other Ammco and Coats service parts and accessories I have listed.