SPACECARE 4 Rubber Locking Swivel Wheels Telescopic Furniture Dolly Roller With Size Adjustable-STFD001 Compare with other products this has 4 Locking Rubber Swivel Wheels 4 Sturdy PVC Corner Pieces 4 Sturdy Stainless Steel Poles Weight Capacity:250lbs Height: 3-3/4 inches, Maximum Width And Length: 27-3/5inches,Minimum Width And Length: 18-1/2 inches