DT Swiss Ratchet EXP Freehub Body - SRAM XDR, Standard, Aluminum, Sealed Bearing, Kit w/ End Cap, 12 x 142 mmRatchet EXP freehub bodies have a matte finish. These are available in two different versions, with ceramic bearings for the 180 hub and with steel bearings for the 240. Ratchet EXP freehub bodies have no seal themselves, as this sits on the hub shell. Steel Bearings, Compatible with 240 series hubs End Cap Included Item Specifications Cassette Body Type SRAM XD Cassette Body Type SRAM XDR Material Aluminum Rear Axle Type 12mm Thru axle Rear Hub