Cable/Hose Lg., ft. Capacity, lbs. Channel Length, ft. Trolley Material Wheel Material Channel Material Perfect Steerable Transfer Cartludes Each 18 20 52 160 10 Steel Steel Steel 4 Trolleys, 2 Channels, 4 Hanger Brackets, 4 Cable/Hose Brackets, 1 Tow Trolley, 2 End Stops, 10 Beam 37