Block Body Hydraulic Cylinder Double Acting Block Body Steel Nominal Capacity 3 900 lb Stroke Length 2 in Effective Area 0.79 sq in Max Pressure 5 000 psi Oil Capacity 1.57 cu in Retracted Height 4.43 in Extended Height 6.63 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