Knockout Punch and Die Kit For Use With Tool Type Battery-Hydraulic Manual-Hydraulic Knockout Punch Component Included Punch Die and Draw Stud Material Application Aluminum Brass Copper Fiberglass Mild Steel Plastic Maximum Sheet Metal Capacity-Steel 10 ga Nominal Hole Size 1 13/16 in Slug Type Falls Free Punch Shape Square Number of Pieces 4 Includes Draw Stud Yes Draw Stud Diameter 3/4 in Draw Stud Length 7 in Exact Hole Diameter 1 81/100 in