All the benefits of our proven Glide and Set saddles, plus the easy loading roller from Roller Coaster. Two great things that go great together! Proven Thule roller sits close to rear saddles and centers boat for easy loading. Rear facing roller extends saddle loading point to better protect vehicle from boat damage. Roller prevents keel contact with load bar while loading, keeping loading effort to a minimum and protecting hull from damage. Smooth loading achieved with low friction, felt lined HydroGlide rear saddle. Adjustable Set to Go front saddles provide maximum boat support and hull conformance. Kit fits Thule load bars only.