The Big Red AT30306BR hydraulic long ram jack has a single piston pump and clevis base that is designed for residential and commercial use. Fits most garage/shop cranes, engine hoists, and more. The lifting range is 24-3/8" to 43-7/8" with a 3 ton (6,000 lb) load capacity. This long ram jack is constructed of heavy-duty steel with a heat-treated chrome cylinder for added strength. It features a high-quality glide-action pressure pump designed to lift with minimal muscle and effort and has an integrated built-in oil-bypass and overload valve that protects the hydraulic system from extending beyond its travel limits. Hydraulics are powered with a high-quality oil, which offers better corrosion resistance and high/low temperature flexibility, allowing the unit to operate at temperatures between 40 degrees Fahrenheit and 105 degrees Fahrenheit. The piston ram is treated and polished to resist skiving and utilizes a Y-style polyurethane sealing ring with backup ring, preventing the load from falling slowly. The clevis style base provides added versatility. After a thorough chemical wash to ensure a long-lasting finish and to help prevent rust, it's treated with a powder-coated, lead-free paint, providing a durable coating which is oil, grease, and dirt-resistant for easy cleanup. This unit is 100% factory tested for reliability and safety to meet and comply with ASME PASE safety standards. Includes a limited 1 year manufacturer warranty.