TheHope Bottom Bracket PF41 30mm Bearing Kit.Simple, durable and light high quality stainless bottom bracket bearings for 30mm axle crank sets. With high quality stainless bearings. Designed to fit Press fit 41mm threadless bottom bracket shells. Suitable for road, mtb and fatbikes. Hope Bottom Bracket PF41 30mm Bearing Kit Features Fits 89.5, 92, 104.5, 107 and 121mm bottom bracket widths Designed to suit cranks with a 30mm axle in a Press Fit 41mm bottom bracket shell Weight 77g