Strongway Hydraulic Bottle Jack - 4-Ton Capacity, 7 1/2in.-14 5/8in. Lift Range Constructed of high-grade steel and built to exacting standards for quality and durability Lead-free paint finish is applied after a thorough chemical wash to ensure a long-lasting finish and to help prevent rust Paint is oil, grease and dirt-resistant for easy cleanup High quality large diameter hydraulic steel cylinder unit results in lower oil pressure needed to raise the load, helping to reduce wear and extend service life Piston-ram is treated and polished to resist skiving