1、Functional: For mounting kayaks and canoes on most vehicles, using car or glass top suction cups with 2 different mounting angles. 2、Closed Cell Foam: Lightly supports the boat during loading and unloading to prevent scratching. 3、Quick Easy and Smart: The aluminium strips and strong suction cups are securely mounted on the roof or car glass. Provides a quick and easy solution for one person to carry the boat to the top of the car. 4、Easy To Use: Install the rod by turning the lever on the suction cup, then attach the bow or stern of the boat to the rollers while keeping the other end on the ground. Move to the other end of the boat, lift and roll, and slide the boat onto your bar, foam block, or cradling. Turn the lever on the suction cup when done. 5、Sizes: Length 77.5cm (30.5in) x Height 24cm (9.4in). Allows you to use it on almost any vehicle. Item Type: Kayak Roller Material: Foam, Aluminum Product Size: Approx. Length: 77.5cm / 30.5in Height: 24cm / 9.4in Suction Cup Diameter: Approx. 11.8cm / 4.65in Weight: Approx.1030g / 36.3oz 1 x Kayak Stand Set (1 x Roller, 2 x Stands, 2 x Suction Cups, 1 x Hexagonal Wrench)