5 Piece Knockout Punch Set, 10 ga Mild Steel or 12 ga Stainless Steel, Greenlee, Mfr#: K3BB-3-1/2

Knockout Punch Set, For Use With Tool Type Wrench (2 in), 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 4 1/64 in, Slug Type Falls Free, Punch Shape Round, Number of Pieces 5, Includes Draw Stud Yes, Draw Stud Diameter 1 1/8 in, Draw Stud Length 8 3/8 in