Material: sponge + aluminum alloy Colour: Black Size: as shown Application: Mount kayaks and canoes on the vehicle with suction cups on the top of the vehicle or on the glass, with 3 different mounting angles.Package List 1* C-shaped Aluminum Rod 2* Suction Cups 2* Screws Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.Due to manual measurement, there is a tolerance in the product size. 11.3 Heights AdjustableFor mounting kayaks and canoes on most vehicles, use adjustable aluminum alloy brackets with 3 different mounting heights and enlarged rubber suction cups on the roof or glass. 22.Rotating FoamThickened and elongated 360 rollable smooth sponge pad protects the hull during loading and unloading to prevent scratches. 33.Powerful Suction CupsThe heavy-duty C-shaped aluminum strip has 2 strong suction cups, and the widened suction cups are securely mounted on the roof or car glass and are not easy to fall off. 44.Simple and QuickProvides a quick and easy solution for one person to load the boat to the roof. 220 lbs can be installed reliably. Can be used on most vehicles. 55.Easy to UseThe personal boat loading assistant eliminates the battle of single-person roof boat loading and loads the kayak to the roof quickly, simply, and intelligently.