Hope Pro 2 Evo SRAM XD-11 Driver for XX1 Cassette Complete Unit with Bearings 12x142 Compatible with 12x142, 12x157, 12x177, 12x197 and 12x148 hubs Contains drive side end cap, bearings and driver Replacement Freehub bodies for the Hope Pro 2 Evo and Hope Pro 3 hubs.