●The S400 Kayak and Canoe Carrier requires special fitting kits to fit on your roof rack crossbars. The S400-FK1 Fitting Kit will suit the following roof rack systems: Rhino-Rack Vortex, Thule Aero, Rola* Universal Rail Bars. ●Attach the S400 Kayak and Canoe Carrier to your roof racks. ●Comes with all the nuts, bolts, washers etc required ●Product Type: OUTDOOR RECREATION PRODUCT