Features In order to prevent the direct grinding position from slipping or automatic turning and thus damage to the drill, please use the automatic center punch for scoring. Self-centering stamps have an internal spring mechanism that allows them to mark materials without a hammer and free your hands for stable work. The center punch is also a great tool to stow in the car for breaking windows in an emergency. Tip Material: High Speed Steel.Handle Material: Brass After-sales guarantee: If you encounter any problems after purchase, please feel free to contact us, we will reply within 24 hours and solve it for you Description: In order to prevent the direct grinding position from slipping or automatic turning and thus damage to the drill, please use the automatic center punch for scoring. Self-centering stamps have an internal spring mechanism that allows them to mark materials without a hammer and free your hands for stable work. The center punch is also a great tool to stow in the car for breaking windows in an emergency. After-sales guarantee: If you encounter any problems after purchase, please feel free to contact us, we will reply within 24 hours and solve it for you S pecifications: Tip Material: High Speed Steel Handle Material: Brass Hardness: HRC58°-65° Length: 127 mm/5 inch Colour: Gold Quantity: 1 Packaging: 1 x Automatic Centre Punch Package List