Trailer Stabilizing Jacks is used by semi-trailers during loading and unloading operations to help prevent trailer tipping. This can be caused by several conditions such as load imbalance or settling on soft ground. The features include heavy, tubular construction, large base pad, large diameter steel wheels, large trailer contact pad with hole to accept trailer kingpin and is supplied with crank and wheel & foot combination and easy to position by hand and have portable design. The lift capacity is 8,000 lbs. at 100 ft.-lbs. input torque and static load capacity of 62,500 lbs. and top pad size is 6″ x 20″, base pad size is 12″ x 18″ and wheel size is 9″ diameter.