Knockout Die For Use With Tool Type Battery-Hydraulic Manual-Hydraulic Knockout Punch Component Included Die Material Application Aluminum Brass Copper Fiberglass Mild Steel Plastic Maximum Sheet Metal Capacity-Steel 10 ga Nominal Hole Size 2 29/32 in Slug Type Falls Free Punch Shape Round Number of Pieces 1 Includes Draw Stud No Exact Hole Diameter 2 91/100 in Maximum Sheet Metal Capacity-Aluminum 10 ga Series Speed Punch