Wesco Rais-N-Rol movers transport large and bulky loads with ease. Hand-operated hydraulic jack for easy lifting and controlled lowering of loads. 6in. x 2 1/2in. urethane swivel casters allow movement in any direction. Supplied with hooks for use with load binders. Sold as a pair. U.S.A. Rollers qty. 2 Each mover, Single, Pair, or Set Pair, Roller Size in. 6 x 2 1/2, Includes Hooks for load binders, Dimensions L x W x H in. 23 x 16 1/2 x 41 3/8 lowered, Hydraulic Yes, hand operated hydraulic jack, Load Capacity lbs. 6,000, Max. Lift Height 6. ID fork span range is 6in. to 19 1/2in.