Designed to help you easily get any type of kayak up on your roof, the HandRol's rubber rollersprovide load assist with grip, stability, and protection. The bases pivot to automatically fit theshape of your boat, then lock tight to cradle it while traveling. The universal mount fits mostroof racks - no tools needed, and heavy-duty straps and tie-downs are included to keep thingssecure. Add SKS Lock Cores for added security. Sold in pairs, the HandRoll can team withanother set of rollers or our DeckHand saddles for a custom set-up.