Product Type: Hydraulic Jack Main Material: 45 Steel Range of Application: Lifting Equipment Oil Capacity: 41cc Section Quantity: 2 Connector Model: ZG-3/8 Use Angle: 360 Degrees First Section Tonnage: 20T/44092lbs Second Section Tonnage7T/15432lbs Total Tonnage: 20T/44092lbs First Section Stroke: 1cm/0.39inch Second Section Stroke: 1.6cm/0.63inch First Section Piston Diameter: 5cm/1.97inch Second Section Piston Diameter: 3.1cm/1.22inch Total Stroke: 2.6cm/1.02inch.