Husky 6 in. Automatic Spring Loaded Center Hole Punch 70079H - The Home Depot
GPFC350: GPFC 3-Jaw Center Punch Former L=0-350mm
NEWTRY Pneumatic Hole Puncher 5mm Air Metal Hole Punch Tool Industrial Sheet Metal Punching Gun Heavy Duty Metal Hole Flange Opener for Doors & Windows, Factory, Office and Home - - Amazon.com
Mayhew | Punches & Chisels | Automatic Center Punch | Automatic Center Punch - Mayhew Steel Products