Product Description The Xpress(TM)TRX adjusts from 3.25" to 16" wide allowing it to fit nearly all scupper style kayaks. The padded uprights protect the hull from abrasion and firmly hold the kayak in place during transport. With a maximum load rating of 150 lb (113 kg), these carts can handle most sit-on-top recreational boats with gear. Constructed of tough marine grade aluminum and finished with a silver anodized surface for long term dependable service. Features include adjustable mark-proof rubber padding, corrosion resistant hardware and adjustable scupper post height for tough to fit boats. Each cart includes TRX airless tires that guarantee you will never be caught with a flat tire during portage. With the integrated push button wheel release system, the need for wheel retainer clips is eliminated. Product workmanship and material performance is included with our Lifetime Limited Warranty (offered by manufacturer) . Product Features 10" TRX Airless "Never-Go-Flat" all terrain tires High grip rubber tread works well over rough and rocky terrain Push button wheel release - No more clips to lose Adjustable width and height Corrosion free and UV resistant construction Lifetime Limited Warranty