The Ursa Thornbuster Wagon with No Flat Tires is ready when you are. Designed for big jobs and big loads...400 lb capacity. We see these used mostly at construction sites and home center nurseries. You can choose pneumatic or "never flat" tires. If you work around nails, screws, or construction debris then get the never flat tires. These airless tires are made of lightweight, micro-cellular polyurethane on a heavy duty steel rim with ball-bearings and grease zerks. When combined with Ursa"s incredible maneuvering and easy dumping, the Ursa Contractors wagon means easy wheeling through whatever gets thrown your way. * Extra thick single walled resin dump box * Choose pneumatic or never flat tires * Easily fits through standard door or garden gate * Wide tires distribute weight evenly to roll over soft ground * Easily accessible grease zerks make maintenance a breeze * Sled is easily removed for use on snow or ice * Jumbo design carries big loads up to 400 lbs or 12 cubic feet * Made in the USA