Airless WaveChaser wheels and a tromboning adjustment make the Swift the best sit-on-top cart on the market. Slide your boat easily on to, or off of, the cushioned uprights and away you go! A super beefy 35mm guage 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" scupper holes.