High quality material: The automatic centering punch made of high-speed steel, which withstands strong impacts, is wear-resistant and rust-free and extends the service life. with deep knurling on the surface so that it does not slide and offers more precise operation and control. Unique design: it has a deeply knurled finger grip for easy handling and better control, more security, the non-pinching the comfortable cap is good padding for your palm against the effects of springs. Easy to use: use the heavy head to align the positioning point. Firmly squeeze the handle and push it towards the punch, after briefly pushing the punch back into the rod, the strong spring will forcefully eject the punch. Impact-resistant adjustable: adjustable impact force, adjustable spring tension for light or heavy strokes, marking, punching and staking. You can control the impact pressure of the double spring loaded shaft and provide the correct notch in the material used. Versatile: 3 colors (black, gold and silver), 128 mm / 5.04 inch length, suitable for a variety of tasks such as marking on materials, automatic emergency tools, replacement emergency hammers and iron plate positioning, wood positioning, wall positioning, etc.