The Dutro 4 Wheel Swivel Mover Aid is equipped with 5" solid rubber swivel casters to ensure ease of movement. Plus the casters are non-marking which prevents unnecessary streaks on you floors.The durable tubular frame has two carpeted planks on eith er end to prevent unnecessary wear and tear during moving. 5" solid rubber swivel casters ensure ease of movement. A 1200 lb capacity makes this mover aid ready for all your heavy cargo. The overall dimensions of the platform are 5 1/2" x 18" x 29" m eaning you have a broad base on which to stabilize your cargo. All Dutro products are made in the U.S.A.Order this mover aid today for its ease of movement and heavy load capacity