DT Swiss Ratchet EXP Freehub Body - Compatible with Shimano HG 11 MTN, Light, Aluminum, Sealed Bearing, Kit w/ End Cap, 12 x 142/148 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. Product Specifics Cassette Body Type: Compatible with Shimano Dynasys 11 Speed Mountain Cassette Body Type: Compatible with Shimano SRAM 8, 9, 10 Speed Material: Aluminum Rear Axle Type: 12mm Thru axle