The Seattle Sports Scupper Swift Kayak Cart features air-less WaveChaser wheels and a tromboning adjustment to make the Swift the best sit-on-top cart on the market. Slide your boat easily on to, or off the cushioned uprights and away you go! A super beefy 35mm gauge axle can take all sorts of abuse, while the airless wheels eliminate all flat tire hassle. A deep, ruby-red anodized coating finishes the cart. Adjusts from 8.5 to 18 inch width between scupper holes.