Fits Black 180 front hubs as well as 1200/1501 Spline, and RR21 Dicut Disc Gen 1 wheels made before 2016 To be used with Rock Shox Torque Cap compatible forks HWGXXX0009101S FT 180/240 Before 2016 15mm TA 110mm Boost 26.5g 1250/1501 Spline Before 2016 (1St Gen)UPC/EAN/GTIN: 7630033858977