Hydraulic Hole Punching Tool Copper Iron Hole Puncher CH-60 Hole Digger Capacity: 31T(310KN) Depth of throat: 3.74"(95mm) Aperture: 3/8"(10.5mm),1/2"(13.8mm),5/8"(17.5mm), 3/4"(20.5mm) Iron plate: 0.24"(6mm) copper bar: 0.39"(10mm)