Chores never stop and neither will you with the new Ursa ThornBuster™. The Ursa ThornBuster™ has never flat tires so it's ready when you are. These airless tires are made of soft lightweight, micro-cellular polyurethane that give just like an air-filled tire. They roll smooth and easy on a heavy duty steel rim with ball-bearings and grease zerks. The Ursa ThornBuster™ has the same incredible maneuvering and easy dumping of all Ursa Wagons so you can enjoy easy wheeling through whatever gets thrown your way. The ThornBuster™ has an optional hitch adapter for your small tractor or ATV.