Ratchet LN freehub bodies support the entry level Ratchet System of DT Swiss, primarily used in the lower price products like the 370 hubs. The Ratchet LN freehub body is designed to replace the 3-Pawl freehub system. FEATURES : Ratchet LN uses the same inner parts as the freehub Ratchet System, where the difference lies in the freehub system seal, located on the freehub body End Cap Included SPECS : Rear Hub Spacing (mm): 142 , 148 Material: Aluminum Cassette Body Type: SRAM XD 11/12 Speed Rear Axle Type: 12mm Thru-axle