Material : The automatic front sight is made of high-speed steel, which is impact-resistant, wear-resistant and rust-resistant to extend the life of the front sight. Strength adjustment: Spring tension adjusts for light or heavy hitting, scoring, punching and staking, use the heavy head to score the center of a hole you want to create. Easy to use: press down firmly the handle and push it in the direction of the stamp. align it with the positioning point. the strong spring will forcefully eject the pad. no tools such as a hammer are needed, one-handed operation, convenient and easy to carry. Elaborate design: The bag has a deep knurled finger grip for easy handling and better control. A comfortable hat is a good cushion for your palm and can resist the influence of feathers. 'emergency : Besides wood and metal, it can also break car glass panels, as long as you use it in the window corner, it will break and fall, or it can be pushed and escape. Specification: Material: Steel, Aluminum Alloy, Plastic Size: 13*2.8cm \/ 5*1 inch Color: Blue, Red Product Descriptions: The pad is made of precision high-speed steel, and the surface knurling is very deep so that it does not slip. Impact resistance is adjustable. Just unscrew the cap to adjust the depth of the punches. In addition to wood and metal, it can also break glass car windows. Just use it in the corner of the window. It can break and fall, or slip and slip away. Suitable for wooden floors, fiberboard, particleboard, plywood, plastic, aluminum panels, etc. Note : 1. Please keep them away from children. 2. Please allow chromatic aberration due to different lights and screens. 3. Please allow slight measurement errors due to manual measurement.