The SweetRoll makes loading your boat easy! Two front and two rear saddles with integrated rollers will have you and your friends on the water in no time. No tools needed to mount to any crossbar type makes it simple to install. The spring-loaded base automatically adjusts to your boat when loading. The tilting paddle technology accommodates an array of boats and roof rack systems. It comes as a complete system that includes saddles, heavy-duty straps and bow/stern tie-downs.