The making of the no crank heavy duty trailer jack drill gearbox adaptor

A gearbox to eliminate hand cranking of your trailer's jack. Saves wear and tear on your shoulders and elbow. Uses a 20V and up hand drill (Not supplied) as a power source through high gear reduction. 100% made in house, in the USA! Can be moved to another trailer in seconds so you can keep one unit in your tow vehicle and use it on all your other trailers. Patent pending design, designed and made in DeLand FL USA!