12v Electric Trailer Winch , The 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 operation, 60 amp standard wiring harness, Pulley block for double line applications, , Model 912, suggested max boat length, Max. boat weight of 11,500 lbs, 4000 lb vertical lift capacity (single line) or double pull/line capacity 7500 lbs. (Not to be considered or used as a hoist) , Specifications. Max. Boat Weight: 11500 , Line Speed: 8 FPM , Vertical Lift Capacity: 4000 lbs , Remote Control: No , Light: No , Double Line Capacity: 7500 lbs , Gear Ratio: 450:1 , Power Source: 12V , Circuit Breaker: 60 amp , Unit Weight: 35 lbs , Depth: 10″ , Width; 10″ , Height: 8″ , Cable Length and Diameter: 40′ x 7/32″.