Ch-70 Hydraulic Hole Punching 35t Tool Puncher Cfp-800-1 Copper Bar Smooth Robust Construction Pump Joint & 35Ton 110mm Deep Throat Punching Dies & 4 Pairs Great Portability Various Application Aperture(4 pairs): 3/8'(10.5 mm), 1/2'(13.8 mm), 5/8'(17.5 mm), 3/4'(20.5 mm),Depth of Throat: 4.3',Punching Force:350KN(35T),Max. Thickness of Aluminum: 1/10-1/2 inch,Max. Thickness of Stainless Steel: 1/10-3/10 inch,Max. Thickness of Iron Plate: 1/10-2/5 inch,Max. Thickness of Copper Bar: 1/10-1/2 inch