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 Plastics Stainless Steel Maximum Sheet Metal Capacity-Steel 10 ga Nominal Hole Size 4 35/64 in Slug Type Falls Free Punch Shape Round Number of Pieces 4 Includes Draw Stud Yes Draw Stud Diameter 3/4 in Draw Stud Length 5 1/2 in Exact Hole Diameter 4 27/50 in