Knockout Draw Stud For Use With Tool Type 1/2 in Conduit Size Greenlee SpeedPunch Knockouts Greenlee Battery-Hydraulic Greenlee Manual-Hydraulic 746 or 746A Ram 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 3/8 in Draw Stud Length 4 3/4 in Finish Carbon Steel Series Knockout Draw Stud