Hollow Hydraulic Ram Single Acting Hollow Plunger Steel Nominal Capacity 2 ton Max Push Capacity 2 ton Stroke Length 1/4 in Nominal Stroke Length 5/16 in Effective Push Area 1.33 sq in Max Pressure 3 000 psi Oil Capacity Push 0.41 cu in Retracted Height 2.06 in Extended Height 2.37 in Outside Dia 1.79 in Plunger Dia 6.5 in Plunger Thread Size 1/2 In.-20 Collar Thread Size 1-7/8 In.-16 Base Bolt Circle Dia 1 in Base Mounting Thread Size 3/4 In.-20 Center Hole Dia 0.5 in