Features. Include a built-in level which is easily adjusted to read level based on the inside of your trailer. A 12 volt light exactly where you need it to make it easy to hitch-up or unhitch after dark. If your battery is dead or out of the unit for storage you can use the Crank-Through feature to lift the trailer. Super Hi-Power Jack has a full 18 in. stroke making it easier to attach the equalizing bars. The 3500 includes an extra-large footpad.