The Monkey Bars are 48" long round black-anodized aluminum cross bars to which you can attach accessories for activities such as kayaking, skiing, surfing and paddle boarding, biking, or hauling cargo. Powered by 6" powerful (210lb pull-strength rated each) vacuum mounts (4 up front and 2 in the rear), the Monkey Bars fit on just about any car with a roof. Have a wide or narrow roof? No worries, the vacuum mounts can be moved to any position on the bar to ensure a perfect fit for any vehicle. Bar diameter: 1.3"/33mmItem SpecificationsCross Bar CompatibilityRoundVehicle Mount TypeNaked RoofWidth48 SeaSucker Monkey Bars Roof Rack System Load Bar/Tower Set UPC: 810046210192