This is a CNC machined billet hub that bolts to the flywheel of the small block Briggs Vanguard horizontal engine. The hub is universal and used when the other hubs we manufacture will not work for your project. It features machined lines on 1/8 increments and lines at several angles including a center mark for you to do your own thing to. Includes the hub and 4 mounting bolts.
Please note: There are 2 options for bolts. 5/16-18 and 8mm x 1.25. You will need to figure out what thread size is in your flywheel. There is no way for us to know.