Easy assemble, safe to use. Max lifting height: 4.72 / 120 mm.Cylinder min height: 10.94 / 278 mm. Oil Be Filled: 350 g. Maximum load can not exceed the rated capacity. The load can not exceed the half of the capacity when all tubes used. The extension of the piston can net exceed the stroke. After using, close the valve with the cover, to keep the oil free from the dust and dirt. Before lifting, adjust the jack slowly to make the load coaxial with resnect to jack. Tube can not be bent, near to the catting tools and fires, also can not put the weight on it. The item "4 Ton Porta Power Hydraulic Jack Air Pump Lift Ram Body Frame Repair Tool Kit" is in sale since Thursday, May 5, 2016. This item is in the category "eBay Motors\Automotive Tools & Supplies\Shop Equipment & Supplies\Auto Lifts & Frame Machines". The seller is "oneflatworld" and is located in Fontana, California. This item can be shipped to United States.