General Purpose Hydraulic Ram Double Acting Hollow Plunger Steel Nominal Capacity 30 ton Max Push Capacity 30 ton Stroke Length 7 in Nominal Stroke Length 7 in Effective Push Area 7.22 sq in Max Pressure 10 000 psi Oil Capacity Push 50.55 cu in Retracted Height 13 in Extended Height 20 in Outside Dia 4.5 in Plunger Dia 2.5 in Plunger Thread Size 1 13/16 In.-16 Collar Thread Size 4-1/2 In.-12 Base Bolt Circle Dia 3.63 in Base Mounting Thread Size 3/8 In.-16