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Amazon.com: Portable Trailer Winch, Reversible Electric Winch 12V DC, Power-in, Power-Out and Freewheel Operations for Boats 2000 lbs with Hand Crank : Industrial & Scientific
Amazon.com: Megaflint Trailer Winch,Reversible Electric Winch, for Boats up to 6000 lbs.12V DC,Power-in, Power-Out, and Freewheel Operations,30% Higher winching Power Than Regular 6000 lbs Winch (5000lbs Marine) : Automotive