The Grainger 16T230 is a 16 ton bottle jack made of steel with a lift range of 10-15/16 inches to 17-1/8 inches. It has a built-in overload valve to prevent over-extending the jack and can lift equipment, dies, molds, and more. The jack's base is 7-3/8 inches x 8-1/2 inches and it weighs 38 pounds. This heavy duty hydraulic jack has a maximum height of 21 inches.