Mulwark 6" Automatic Center Punch For Metal - Spring Loaded, Stainless Steel RELIABLE MATERIAL - 6'' Automatic center punch made with high quality Aluminum and Replacement tip with bearing steel. Electroplating finishing helps to increase the lifetime and provide precise and consistent hole placement on different materials. CENTER PUNCH FOR METAL - Our auto punch offers great versatility and provides efficient working on a variety of materials such as paper, cardboard, plastic, leather, wood, metal and stainless steel. Center punch tool is the perfect centering punch device to help start screw and drilling holes. SPRING LOADED CENTER PUNCH - By applying pressure and releasing the spring mechanism, the automatic punch delivers a controlled and uniform mark, preventing the drill bit from wandering or slipping when starting a hole. Spring-loaded center punch helps to modify light or heavy marking, punching, or staking. EASY USE GRIP - Bearing steel tip of center hole punch holds high impact and provides wear resistance, rust proof and strength to prolong the tool?s life. Spring loaded punch has a deeply knurled finger grip to achieve easy handling and better control. LIFETIME WARRANTY All MulWark - tools are warranted to be free of defects in materials and workmanship for as long as you own the product, you may return this product free of charge with original purchase receipt or choose to get a replacement.