SnoStuff 710-001-207 Big Wheel Shop Dolly (Wheel Assy Big Plastic) Large diameter, narrow-profile high-strength nylon wheels make this Dolly easy to use with any Sled High-pressure tires withstand the weight of even the biggest Sleds Large wheels make it easy to move Sleds over obstacles Large diameter heavy-gauge tube Construction for superior strength High-density urethane pads for grip and protection