The D-hole punch is a hand tool used to cut a D-shaped hole. The D-shaped hole allows the connector to be securely mounted and prevents the connector from spinning

Part Number 24-D-Punch Shell Size 24 Punchable Material Up to .078″ mild steel or aluminum. Up to .1875″ plastic, wood, paneling, or other soft material Tool Material A2 material heat treated to a Rockwell hardness of 60-62 Tool Size 5.5″L x 2″ H x 2″ D Sharpening The tool can be sharpened as needed Usability A. 625″ minimum pilot hole is required to accommodate the draw stud. Air tools can be used.