The Thule Xadapt 7 is an adapter kit that makes it possible to connect the Thule 899XTR bike rack pack and 889 bike rack pack to Thule Xsporter truck racks. FEATURES- Thule 91725, 91726, and 91724 Universal Ski Carriers to the Thule Xsporter truck racks, Thule Rapid Aero Load Bars, and Thule Professional Racks- Heavy Duty Hardware- Easy to follow instructions included