The REESE Pro Series Weld On Trailer Jack lets you jack up your trailer with ease. From trailers and vehicles to boats and RVs, this square jack can do a little bit of everything. With a 12,000-pound support capacity, this heavy duty trailer jack is the real deal. The trailer jack handle features a sidewind design for quick and easy adjustments. It also features a retraction of 28.25 inches, extension of 54.25 inches, and a travel of 12.5 for versatile use. Perfect to include as part of your travel trailer accessories or boat accessories. Constructed from premium steel for superior strength and durability, the REESE Pro Series Trailer Jack is the perfect solution for all your trailer lift needs.