Moves heavy furniture with ease. Great for moving refrigerators, sofas, entertainment centers, pianos, beds, bookcases, file cabinets and more. Ideal for use on thick, plush carpet. Constructed of a rubber top and a plastic bottom for long lasting durability. Bulky items can be pushed or pulled with slides positioned underneath. Low friction, plastic bottom glides over carpet, vinyl or tile floor, while rubber top surface firmly grips the item. Size is 9-1/2" L x 5-3/4" W. Quantity is Set of 4. EZ Moves. Simtec Co.