In this video from JewelrySupply.com, you'll see how a center punch is used to help drill holes in metal blanks or metal sheet.
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✔ High Quality - The center punch is made of high quality steel body, black and chrome finish, wear resisting and rust proof to prolong the punch
Glieskir 2 Pack Automatic Center Punch, 5 inch Heavy Duty Steel Spring Loaded Center Hole Punch with Adjustable Tension Punch Tool for Metal Wood
To drill holes accurately, you must start with a punch mark to center the bit. , These center punches are spring loaded; pressing down on the knurled
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