Watersports Carrier transports a kayak, surfboard or sailboard. It attaches easily to Sport-Utility Bars and has multiposition cradles to fit flat or curved hulls. Carrier comes complete with latching, push-button nylon strap to retain cargo. RequiresSport-Utility Bars (sold separately). Water Sport Carrier (kayak, surfboards or sailboards), mounts to T-slot compatible Sport utility bars ,sold seperately.