Vittoria Shimano Freewheel Including Spacer & Bearings R221 Hub - 11 Speed

All road wheels have the Vittoria SwitchIT cassette mounting system (except for entry-level models Vittoria Alusion and Session). Cassettes mount on a freewheel sleeve that can be quickly removed and replaced without tools easily change gear ratios to tailor your wheels for any course, and switch quickly between Shimano, Campagnolo, or SRAM cassettes, with ultra-easy maintenance.