Find a jack that your can rely on with the Weld-On Square Tube Jack by Pro Series. This industry leading square jack dramatically improves side load strength capabilities to hold up various trailers. It features a sidewind handle for quick and easy adjustments at any given time. The premium trailer jack provides a retraction of 27.25 in., extension of 53.25 in., travel of 12.5 in., and additional travel of 13.5 in. The tubular swivel model includes a mating mount and pull pin for optimal use. It's constructed from premium material for superior strength and durability. It has a maximum weight capacity of 12,000 lbs. Optimize your storage capabilities with the Weld-On Square Tube Jack by Pro Series. Material: Steel.