Made from cast iron with a durable baked enamel finish, the super heavy duty long ram hydraulic flat bottom jack provides an ample 19-1/4" stroke for facilitating optimal lift of objects up to 8 tons in weight. It"s the ideal jack for use on hydraulic cranes, engine hoists, and a wide variety of applications for mechanics, truckers, farmers and off-road enthusiasts. Provides lift ranging from 24" up to 44-1/2" in height.•Max. height: 44-1/2"•Min. height: 24"•Pinhole size: 5/8"•Stroke: 19-1/4"•Shaft diameter: 1-5/16"Capacity:16,000 lbs. Stroke: 19-1/4" Shaft diameter: 1-7/64" Pinhole size: 5/8" Weight: 30.70 lb.