Tow Tuffs TMD-35ETD8 Electric Trailer Dolly is the new best way to move utility, boat, or cargo trailers. The unique, 3rd wheel design stabilizes the load to move trailers and equipment safely. This Trailer Dolly is equipped with an 800W motor and powered by 24 volt â 2 sealed 7 AH batteries and has variable speeds in forward and reverse, traveling up to 1.5 mph. Use this Electric Trailer Dolly with a wide variety of trailers with the adjustable ball heights from 22 to 28.35 . This dolly features two, 13 tires and one, 8 swivel caster â perfect for all kinds of terrains. The heavy-duty structure gives you a long-lasting product. Designed with a step for added foot leverage, this dolly works with a 2 coupler. The capacity of 3500 lbs. with a tongue capacity of 600 lbs. allows you to move a wide variety of trailers and includes an LED battery indicator light. Features two, 13 tires & one, 8 swivel caster Overall capacity of 3500 lbs & a tongue capacity of 600 lbs Variable speeds in forward & reverse, travels up to 1.5 mph | Tow Tuff Electric Trailer Dolly