[High-quality materials] Our automatic center punch is made of high-speed steel, with high hardness, wear-resistant and rust-resistant. They have a deep knurled surface, so it won't slip. It can withstand strong impacts and has a long service life. [Unique Design] The Center Hole Punch tip uses a precise centering design to increase precise hole positioning and control. The surface of the automatic center punch 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 breaking windows or car windows in case of danger. Just use it on the edge of the window to make the window crack and fall. Help us to escape and ensure safety. [Easy to use] The automatic center punch uses the internal spring to produce an impact to open the item hole without tapping. using a hammer, easy to use. [Multi-purpose] The automatic positioning punch is suitable for many tasks, such as marking on materials, automatic emergency tools, the positioning of iron plates, positioning of wood, positioning of walls, etc.