"Use this Northern Industrial Tools mover to transport the heaviest machinery and appliances, up to 12 tons Smooth movement improves work efficiency and safety. Single, Pair, or Set Single, Base L x W in. 14 1/2 x 8 1/6, Roller Size in. 3 x 3, Includes 360 rotation for maneuverability, Compatible With Item Number s Northern item# 405708, Hydraulic No, Rollers qty. 8, Dimensions L x W x H in. 20 x 8 1/4 x 4 3/8, Load Capacity lbs. 26,400, Length in. 20. 14 1/2in.L x 8 1/26 in.W platform with 6in. swivel attachment that rotates 360 Rolls on eight polyurethane-coated steel rollers Maintenance-free operation Small size for easy storage Sold as singles All-steel construction Durable powder-coat finish"