Knockout Punch and Die Kit, For Use With Tool Type Ratchet (1 in), Knockout Punch Component Included Punch, Die and Draw Stud, Material Application Aluminum, Brass, Copper, Fiberglass, Mild Steel, Plastic, Maximum Sheet Metal Capacity-Steel 14 ga, Nominal Hole Size 3/4 in, Slug Type Falls Free, Punch Shape Round, Number of Pieces 3, Includes Draw Stud Yes, Draw Stud Diameter 3/8 in, Draw Stud Length 2 5/8 in, Exact Hole Diameter 3/4 in, Maximum Sheet Metal Capacity-Aluminum 14 ga