[High-quality materials] Our automatic center punch is made of high-speed steel, with high difficulty, wear-resistant and rust-resistant. They have a deep knurled surface, so it won't slip. It can withstand strong impact and long service life. [Unique Design] Center Hole Punch tip uses precise centering design to increase precise hole positioning and control. The automation center punch surface uses a knurled design to achieve comfortable working and reduce user fatigue. [Emergency Rescue] It is not only suitable for wood and metal, but also can break glass or car glass when in danger. Just use it on the edge of the window to make the window crack and fall. Help avoid us and keep safe. [Easy to Use] The automatic center punch uses the internal spring to produce an impact to open the item hole without hitting with a hammer, easy to use. [Multi-purpose] The automatic positioning punch is suitable for many tasks, such as marking on materials, automatic emergency tools, positioning iron plates, positioning wood, positioning wall data are all manually measured, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.Note: The data is all Manually measured, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.Note: The data is all measured manually, please allow 1-3cm error, due to the light and display difference, there will be some color difference, the actual object received shall prevail.