CS Unitec Center Punch, Aluminum Bronze CS Unitec Non-Sparking Center Punches are a part of CS Unitecs Non-Sparking/Non-Magnetic and corrosion resistant Safety Tool Line. CS Unitec Non-Magnetic Center Punches are specifically designed to eliminate the risk of sparks at high-risk sites where explosive atmospheres may be present. CS Unitec Non-Sparking Center Punches are available in Aluminum Bronze. CS Unitec Non-Magnetic Center Punches are commonly used to mark the center of a hole before drilling to guide the tip of the drill. CS Unitecs Non-Sparking Center Punches are drop forged for the highest quality in hand tools.