Strongway Hydraulic Quick Lift Service Jack - 3 1/2-Ton Capacity, 3 7/8in.-21in. Lift Range (1) Hydraulic quick lift service floor jack (1) 2-pc. handle Durable tubular frame is 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 move the load, which helps to reduce wear and extend service life Piston-ram is treated and polished to resist skiving Piston-ram utilizes a Y-Style polyurethane sealing ring with backup ring, preventing load from falling slowly or bypassing oil drift Hydraulic pump is constructed of QT450 Nodular Iron which has a higher strength than other types of iron resulting in greater durability 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 F and 105 degrees F Dual roller pistons provide fast rising action Widened front stance makes the jack more stable Oversized saddle increases contact area with the load being lifted Rolls easily on strong cast iron wheels with high quality bearings, ensuring long life Built-in safety overload system prevents use beyond its rated capacity Quick lift system takes just 9 strokes to reach maximum lift Heavy-duty side plates have dual formed flanges for extra stability and strength Low profile design makes it easy to reach lifting points under most vehicles 2-pc. extended 50 1/2in. quick-release handle offers a better leverage point and the rubberized grip makes it more comfortable to use Handle features a foam bumper pad that&#039;s gentle on vehicles Load control adjustment lets you easily reach any height in the lift range Lifting handle socket screw is knurled for easy operation and also features a roll pin to prevent screw from accidentally coming out 29.8in. x 13.6in. base adds stability Built in ISO certified facilities and engineered using the same systems as Aerospace Technologies and the Automotive OEM sector Meets strict and crucial ASME PALD-2009 safety requirements