Hydraulic Hole Punching Tool Copper Hole Puncher CH-60A Puncher Iron Metal Copper Plate Heavy Duty Metal Holes Puncher Heavy-duty Metal Hole Punching Machine. It is split hole puncher. It is used for punching for metal plate. It is popular in electricity industry, construction, etc. It need to work with a pump. It could punch 0.41"(? A good tool for you! Depth of Throat: 3.74(95mm). Aperture(4 pairs): 0.41"(? Thickness of Iron Plate: 0.236(6mm). Thickness of Copper Bar: 0.39(10mm). Thickness of Angle Iron: 3-10#. Hydraulic Hole Punching Tool apply to L and H style flat copper and ...