Knockout Draw Stud, For Use With Tool Type 2 1/2 in to 6 in Conduit Size Standard Round Knockouts, Wrench (2 in), Knockout Punch Component Included Draw Stud, Material Application Aluminum, Brass, Copper, Fiberglass, Mild Steel, Plastic, Maximum Sheet Metal Capacity-Steel 10 ga, Punch Shape Round, Number of Pieces 1, Includes Draw Stud Yes, Draw Stud Diameter 1 1/8 in, Draw Stud Length 8 3/8 in, Finish Steel, Series Knockout Draw Stud