High-quality material- Self-centering punch made of high-speed steel, which is strong impact resistant, wear-resistant and rust-resistant, and extends the service life. Unique Design- The self-centering surface of the spring-loaded pen pressure pin provides comfortable working and reduces user fatigue, while the precision-centered tip increases control over exact hole positioning. Ease of use- Use the heavy head to align the positioning point. Firmly grasp the handle and push firmly towards the punch, the strong spring will forcefully eject the punch. No tools like hammers required, convenient and easy to carry.Non-slip design- Deep diamond knurled finger grip for easy handling and better control, more safety; The comfortable, non-pinching cap is a good cushion for your palm against spring shock.Multipurpose - Suitable for a variety of tasks, such as: B. Marking of materials, automatic emergency tools, alternative positioning of hammer and iron plate, positioning of wood, positioning of the wall, etc.Note: The data is all manually measured, please allow some error 1-3cm, due to the light and display difference, there will be some color difference, the actual object received shall prevail.