"Wesco Rais-N-Rol movers transport large and bulky loads with ease. Hand-operated hydraulic jack for easy lifting and controlled lowering of loads. 8in. x 2 1/2in. steel swivel casters allow movement in any direction. Each is supplied with hooks for use with load binders. Sold as a pair. U.S.A. Dimensions L x W x H in. 23 x 16 1/2 x 47 5/8 lowered, Single, Pair, or Set Pair, Includes Hooks for load binders, Rollers qty. 2 Each mover, Max. Lift Height 72, Load Capacity lbs. 10,000, Hydraulic Yes, hand operated hydraulic jack, Roller Size in. 8 x 2 1/2. ID fork span range 6in. to 19 1/2in."