We recommend using an 18v or larger cordless DRILL, and setting your clutch to the highest setting. This prevents unexpected kickback or damaging your jack or gearbox in the event you bottom out your jack to the end of travel.

For most general purposes a 2ah Capacity is plenty for multiple up and down cycles. If you plan to go long periods between charges or load/unload very heavy trailers frequently throughout the day a larger amp hour battery will give you more runtime.

WE DO NOT RECOMEND USING AN IMPACT OR IMPACT DRIVER ON YOUR GEARBOX! Impacts are designed to transmit extreme shock loads to what they are driving in order to break things free or drive them home. While that impact is adverse to your gearbox, it is also being transmitted to the internals of your jack that was never designed to hold up to that kind of stress. A cordless drill delivers smooth controlled torque, that is multiplied by your gearbox and safely delivered to your jack.

Generally speaking, your gearbox is replacing you as the source of power for cranking your trailer jack. A good rule of thumb is if an able bodied person can crank the handle manually, a Trailer Gearbox can as well.

The Multi-mount product line is rated at 8,000lbs of tongue weight.

The Supermax product line is rated at 10,000lbs of tongue weight.

Absolutely. Your gearbox simply replaces the existing single handle on your dual jack setup. The gearbox rotates the input shaft of your jack and in turn, the connecting rod between them raising both jacks simultaneously just as your handle would.

Some gearbox models offer a Single Speed and a Dual Speed option.

Single Speed: These gearboxes have one drive input and operate at the maximum gear reduction at all time. That means you are always getting the most torque output, but at the sacrifice of speed. For most casual users this is never an issue, but in instances where there is a need to run the trailer legs up or down a long distance each time, a Dual Speed offers more options.

Dual Speed: These gearboxes have two drive inputs, Heavy Load and Light Load. The Heavy Load input is identical to the Single Speed input, giving maximum torque at the output at a lower speed. This should always be used once your jack begins physically lifting your trailer. The Light Load input uses a reduced gear ratio, this allows your jack to travel much faster, and is intended for running your jack legs down to the ground long distances or lowering your trailer quickly. When your ready to raise your trailer simply swap your drill to the Heavy Load input.

Note: Light Load input may be used to raise an empty trailer, depending on unloaded tongue weight. Test slowly, looking for extreme drill load before using regularly.