This double piston Strongway® 8-Ton Long Ram Hydraulic Jack is the ideal replacement jack for use on hydraulic cranes, engine hoists, and a wide variety of applications. Mounts directly onto shop cranes and features a slow release function while providing a long 24 3/4in.44 1/16in. lift range. 100% factory vertical load tested for reliability and safety. For vertical use only. Meets ASME PALD 2009 standard. Base Dimensions: 4.17 in, Lift Capacity: 8 Tons, Max. Lift Height: 44.062 in, Min. Lift Height: 24.75 in, Pistons (qty.): 2 Constructed of high-grade polished steel and built to exacting standards for quality and durabilityLead-free paint finish is applied after a thorough chemical wash to ensure a long-lasting finish and to help prevent rustPaint is oil, grease and dirt-resistant for easy cleanup4 11/64in. x 5in. clevis style base provides versatilityHigh quality large diameter hydraulic steel cylinder unit results in lower oil pressure needed to raise the load, helping to reduce wear and extend service life17mm dia. top and bottom clevis holesPiston-ram is treated and polished to resist skivingPiston-ram utilizes a Y-Style polyurethane sealing ring with backup ring, preventing load from falling slowly or bypassing oil driftHydraulic pump is constructed of QT450 Nodular Iron which has a higher strength than other types of iron resulting in greater durabilityHydraulics 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 F and 105 degrees FIncludes lift handle for easy operationDouble piston construction allows for quick positioning without loadBuilt in ISO certified facilities and engineered using the same systems as Aerospace Technologies and the Automotive OEM sectorMeets ASME PALD 2009 standard