Genuine NOS DT Swiss 11 Speed Alloy Road Free-hub body for Star Ratchets Works for 12mm Thru axle or 5x130/135 QR with correct end caps (NOT INCLUDED) Can work for less gears (8-10) with appropriate spacers (not included) Compatible with typical Sram and Shimano Cassettes (NOT CAMPY, NOT XD, NOT XDR, NOT MICRO SPLINE) New, never installed on a hub, cassette of gears never installed This is a Star Ratchet Driver (NOT 3 PAWL TYPE) You are buying the driver body only as shown NEW from bulk packaging Alloy body weighs in at 98 grams on my scale No returns, please know exactly what you are buying Shipped within 1 business day