About this item Heavy Duty - The Automatic Center Punch is made from steel that resists corrosion, wear and tear. It is durable and can provide users with satisfying results. Automatic Mechanism - The Starrett Center Punch has an internal mechanism that automatically strikes a blow when downward pressure is applied, making it easy to use in any workshop application. Adjustable Force - The force of the blow can be adjusted when used for different materials by turning the knurled cap. With...