For lifting, pushing, spreading, bending, pressing or straightening requirements. Not affected by temperature extremes. All models work in upright, angle or horizontal position. Electrically welded base and cylinders to assure strength and eliminate leaks. Equipped with labor saving air pump. Complies with ANSI/ASME B30.1 and PALD-1 standards. NOTE: When used at an angle or in the horizontal position, pump must be positioned underneath the bottle jack or performance will be affected.. Includes: 12-Ton AHJ Series Air/Hydraulic Bottle Jack - 456612, Carrying Handle, Pump Handle, Heavy-Duty Molded Case.