2-Packs Automatic Center Punch 5 Inch Spring Loaded Center Hole Punch Adjustable Features? Specifications: Package Includes: Note: Always wear goggles when using impact tools. Warm notices: Steel HIGH QUALITY MATERIAL?Our automatic center punch is made of hardened steel as a metal tool, with chrome plated surface, which can withstand high impact, provide wear resistance, rust prevention and strength to extend the life of the tool. The buffer cap of the center hole punch is made of ABS hard engineering plastic, providing you with very comfortable and accurate operation. ADJUSTABLE TENSION: Our automatic central punch is designed with a detachable rod. The impact strength of the automatic central punch is adjustable. You can adjust the best tension when working by simply turning the knob. The spring tension can be adjusted according to light or heavy blows, marking, punching and riveting. EASY TO USE: The main body of the punch is a diamond shaped anti-skid surface, which is easy to operate and has good control effect. Mark the center of the hole you want to punch. As long as the top cover is adjusted to the required spring tension by turning, the center punch can mark the uniform dent size on the material. No hammering, single hand operation, simplifying work, saving time and energy. WIDELY APPLICATION: This multi-function automatic center punch is suitable for various tasks such as wood, plastic, metal and glass. Our automatic spring locator center punching tools can be used for different purposes, such as wood positioning, wall positioning and iron plate positioning, furniture installation, machine maintenance, etc., and can also be used as a substitute for automotive emergency tools and safety hammers. They are very suitable for marking, punching, piercing and scribing on wood, metal, glass, plastic, leather or wall surfaces. HIGH QUALITY SERVICE: If you have any questions, you can always contact us. We will provide you with a 100% satisfactory solution within 24 hours.