This is a DT Swiss hub conversion kit designed to take existing hubs and modify them to accommodate different size axles. Features: Convert hubs to 5 x 135mm Quick Release Designed to be used on hubs with 3 Pawl HG freehub bodies Coverts 142mm spaced hubs to 135mnm or 148mm to 141mm Compatibility: 2011+ DT Swiss 3-Pawl HG Hubs