12v Electric Trailer WinchThe 912 and 712 Trailer Winches are well established with solid, reliable reputations. They feature smooth power-in/free-wheel out action. You can use a pulley or block at the bow eye to double your pulling power You can get more strength out of your trailer winch, but it slows retrieval speed 50%.Remote power-in/freewheel-out operation60 amp standard wiring harnessPulley block for double line applicationsTwo year limited warranty Model 71223 suggested max boat lengthMax. boat weight of 7,500 lbs2400 lb vertical lift capacity (single line) or double pull/line capacity 4300 lbs. (Not to be considered or used as a hoist)