The Thule 538XT Cable Lock is a large gauge steel cable with integrated key lock offers convenience and security. Bikes, boats, and other toys can be lifted off your car when you're grabbing a post-ride burger or stopping to pick up some forgotten camping gear, but Thule's Cable Lock One-Key System helps secure your gear to your rack to prevent theft. At six feet long it can lock down four bikes or two boats to a roof or hitch rack, has a plastic coating to prevent scratching, and a self-coiling design for easy storage.