Knockout Punch and Die Kit For Use With Tool Type Manual Hydraulic Knockout Punch Component Included Die Material Application Aluminum Fiberglass Mild Steel Plastic Maximum Sheet Metal Capacity-Steel 10 ga Nominal Hole Size 2 27/64 in Slug Type Falls Free Punch Shape Round Number of Pieces 1 Includes Draw Stud No Exact Hole Diameter 2 21/50 in Inside Die Depth 1 1/2 in Maximum Sheet Metal Capacity-Aluminum 10 ga