Attaches to the lift and turns the wheel for you, safe, circuit breaker protected (12 volt), safe, comes with GFI, ground fault (110 volt. Can lift up to 3500 pounds (1588 kg). NOTE: ALL BOAT LIFT ACCESSORIES ARE AVAILABLE THROUGH OUR LOCAL 'FENDOCK' DEALERS. IF YOU NEED ASSISTANCE FINDING A DEALER PLEASE CALL US AT 1-888-336-3625 OR 613-722-6581