Product Name: Automatic Center Punch.Color: GoldDelivery Quantity: 1 pieceUse the spring in the body to generate impact force to punch the holeMaterial: Advanced HSS high speed steel material,Hardness can reach HRC58~65Product outer diameter 12.7mm total length 127mmEmergency Use: If you are looking for an emergency tool in your car, your search is over. This is because our automatic hole punch is not only for metal, but it is capable of breaking car glass, which means you can leave one in your car and always be prepared. Just use it in the corner of a window and it will break and fall or be easily thrown out and escapeAdjustable Tension: Becaus Industrial brass center punch is equipped with an adjustable tension screw, you can get it perfectly so you can use it with one hand.HammerEasier to Punch: An image with an automatic manual punch tool with a spring mechanism that works and makes a solid mark in metal, steel, aluminum, brass, copper and more. This industrial brass center punch gives your drill a starting point and makes it easier for you, so it won't slip in tight spots. Don't let your drill travel againDeep Knurled Surface: Our automatic punch is made with a well-machined brass body and has a deep knurled surface, which means it won't slip and offers more precise handling and control. Each hardened and chrome-plated metal tip lasts for hundreds of strikes, so you can get the job done. It is typically used to mark the center of a point, using a small guide tip to prevent slippage or damage.