12V Power-in and freewheel-out (TW4000), power-in power-out and freewheel-out (TW9000) operation with positive mechanical brake. Clutch control knob engages gears or releases load in a controlled freewheel mode. For boat trailers and other horizontal pulling applications. Equipped with 20′ x 2″ polyester strap and hook. Not for movement of humans.ModelTW4000Boat SizeUp To 4000 lbs.Max Load1500 lbs.UPC85077252002MPN25200LNS Part #16-25200KMS Part #DUT 25200DMP Part #00-7673