Block Body Hydraulic Cylinder, Double Acting, Block Body, Steel, Nominal Capacity 3,900 lb, Stroke Length 1 in, Effective Area 0.79 sq in, Max. Pressure 5,000 psi, Oil Capacity 0.785 cu in, Retracted Height 3.3 in, Extended Height 4.3 in, Capacity @ Operating Pressure 3,900 lb, Operating Pressure 5,000 psi, Series 20-12, Plunger Dia. 0.81 in, Plunger Thread Size 5/16 In.-18, Center Hole Dia. 5/16 in