Use this boat loading system on your car top for a quick and easy solution to load your boat by yourself.The heavy-duty suction cups and two angle adjustment options allow the boat loading system to be used reliably on almost any vehicle. Mount the bar by flipping the lever on the suction cup and then settle the bow or stern of the boat onto the rollers while resting the other end on the ground. Move to the opposite end of the boat and lift and roll, sliding your boat into place on the bars, foam blocks or cradles. Flip the levers on the suction cups when finished. Features:Allows for single person boat loading onto car topsTwo angle adjustment options allow the system to work on most vehiclesHeavy-duty suction cupsNuts, bolts and washers included for suction cup attachment to barsLevers on suction cups allow suction cups to lock securely onto car tops or windowsSpecifications:Dimensions: 25”L x 6 1/2”H x 2 1/2”dia.Weight: 1lb. 8oz.