- - - - - - - - - - - Hydraulic Punch and Die Set Capacity (Tons) 35 ton Working Pressure (PSI) 10 000 psi Spring Return Cylinder Hole Size (In.) 0.44 0.56 0.69 and 0.81 Bolt Size (In.) 5/16 in 1/2 in 5/8 in 3/4 in For Punching Holes thru Mild Steel to 1/2 in Thick Works with Hand Air and Electric Powered Pumps Includes Bench Mount Bracket Die Changeover Tools 3/8 in Coupler 4 Die Sets and Metal Storage Case