Battleship Gray Folding Kayak J Racks Car Top Carriers - 1 Set - by Pack'em Racks Fold down design doesn't need to be removed after every use Fits crossbars that are up to 3-1/2" wide for square or rectangle, and 1 1/2" for oval The included quick adjust straps make your tie down procedure super fast. The rack surfaces are painted to prevent rust and extend the product service life. Our racks will accept kayaks up to 3 feet wide and weighing up to 100 pounds.