8-piece set: Automatic center punch, automatic center punch, spring-loaded center punch, automatic center punch with adjustable impact force for wood, wall and metal, with 2-piece changeover point

[MATERIAL] Mark the starting point with a metal rod (steel, aluminum, brass, copper), wood, glass, leather, or plastic to prevent the drill bit or screw from slipping. [ADJUSTABLE] The automatic center punch has a built-in spring for tension regulation. You can turn the cover clockwise or counterclockwise to achieve the optimal position and lock the punch in place. [VERSATILE] The automatic center punch can be used as a manual drilling tool for wood, soft metals, and glass. It can also be used to break car windows to allow you to escape in an emergency. [EASY TO USE] Simple one-handed operation; no hammer required. For anyone who only has one hand to hammer, this tool is indispensable. The self-centering center punch is an excellent addition to your toolbox. [SPECIFICATIONS] The set includes 8 self-centering punches and 8 replacement punches. Compact design and shape, easy to transport.