TMB's BAC-W46567474 Trailer Jack is built to last, featuring a black painted outer tube and a durable zinc finish inner tube, ensuring long-lasting performance and resistance to corrosion. Equipped with a grease zerk, this jack allows for effortless greasing, promoting smooth operation and extending the product's lifespan with minimal maintenance effort. With a support capacity of 8,000 lbs. and a lift capacity of 7,000 lbs., this jack is designed to handle heavy loads with ease, providing reliable support for a variety of applications. Boasting a travel distance of 15" and a retracted height of 23.5", this jack offers ample adjustability to suit different needs, making it versatile and adaptable to various situations.