- - - - - - - - - - - 35 Ton Hydraulic Punch Capacity (Tons) 35 ton Working Pressure (PSI) 10 000 psi Spring Return Cylinder Hole Size (In.) - Bolt Size (In.) - For Punching Burr-free Holes in Mild Steel Up to 1/2 in Thick Works with Hand Air and Electric Powered Pumps Includes Bench Mount Bracket Metal Storage Case Die Changeover Tools and 3/8 in Coupler