With proper and regular maintenance, this hydraulic jack can be used for a long time without leaking. Rotate screw up when height is not enough. It's ideal for use with automotive, construction, industrial and agricultural applications. It is perfect for cars, trucks, caravans and tractors. Use it uprightly, not edge-on or upside down. Features:Whole body casting with thickened steel plate, durable for long time use.Release oil return valve for auto descend; operation is simple, convenient and quick.2 parts handle for easy storage, long handle make lifting easy and saves your labor.Skid resistance top with cross grooves, enlarged base ensures stability and safety .Ideal for use with automotive, construction, industrial and agricultural applications.Specifications:Maximum Lifting Capacity: 8TMinimum Height: 200mm/7.87inMaximum Height: 340mm/13.39inAdjustable Height: 60mm/2.36inLifting Height: 125mm/4.92inOiling Maintenance:1. Put jack in vertical state.2. Lower the pump and piston, until it is completely loose.3. Remove the rubber oil plug.4. Pour into high quality hydraulic oil.5. Mount rubber oil plug.Package Includes:3 x Hydraulic Jack.