142mmx12TA conversion end caps compatible with all straight-pull, 11-speed road DT rear hubs and wheels Specific to 11-speed road freehubs and are not compatible with 9/10 speed mountain hubs Also fits 148x12TA hubs but will not adapt 142 to boost, they simply use the same endcaps Compatible with 1100/1400/1600 Dicut, 1400/1600 Spline Shimano style ratchet system freehubs, 1800 Spline 3 pawl Shimano ratchet systems HWGXXX0006333S RR 240/350 12mm TA 142mm 18g Shimano Ratchet SyStem FreehubUPC/EAN/GTIN: 7630033835183