Knockout Punch, For Use With Tool Type Knockout Tools, Knockout Punch Component Included Punch, Material Application Mild Steel, Stainless Steel, Maximum Sheet Metal Capacity-Steel 12 ga, Nominal Hole Size 1 in, Slug Type Splitting, Punch Shape Round, Number of Pieces 1, Includes Draw Stud No, Exact Hole Diameter 1 19/50 in, Series Exact.