BRAND NEW Part# 52-0173 Tech Note: eBay fitment chart is for Brand recognition only. This is a universal wheel and not a direct bolt on for any specific bike. Commonly used on custom Choppers/Bobbers with Springer front ends or custom forks. 21″ X 1.85″ chopper style spool wheel includes chrome hub, a flat style front rim with an 8.5mm center hole, 40 chrome spokes **NOTE: All spokes on wheel need to be inspected and re-torqued after 500 miles of original installation. The diameter of the slot that holds the bearing in the wheel is 1.509″. Hub Width: 3-5/16″ Bearing ID: 5/8″ Bearing OD: 1-1/2″ Bearing Width: 1/2″,Hub Width: 3-5/16″ Bearing ID: 5/8″ Bearing OD: 1-1/2″ Bearing Width: 1/2″