Center Punch Marking Tool--Centre punch is often used to mark a central point to create an indentation for the drill. It can also be used as a window escape tool, to break to glass from the edge of the window. Durable Material--The tip of this automatic center punch is made of high-speed steel, which has high strength, rust and wear resistance. Non-slip Design--The surface of the automatic centre punch has knurl non-slip design, the design of the spherical grip allows you to hold comfortably when using, help you save labor and non-slip. Easy to Use--Don't need a hammer, set the punch point with the center punch, hold the handle tightly and press in the direction of punching, the powerful spring will spring the punch back and the punching point can be completed. Widely Application--Automatic center punch is suitable for many types of materials, such as wood, plastic, metal and glass, but not suitable for marble and stainless steel material. Product Feature 1.Automatic center punch marks a dent centered point that is not easily offset when drilling with a bit. 2.Small size and suitable for carrying and keeping it in your car as a backup tool. When you're in an accident and can't open the car door or window, you can use the center punch to break through the window edge to escape. 3.Automatic center punch was made of high speed steel, durable and sturdy, hardness up to HRC58-60. 4.The surface of the center punch has a deep pattern, makes it no easy to slide that can provide more precise control and operation. 5.Automatic center punch with spherical grip design at the top, which was made of ABS plastic, easy to hold and use. Product Details Quantity:2 Pcs Color include: gold, black Weight: 78g/pc Material: head punch pin alloy steel material Size: full length 128mm, the diameter of the rod is 12.7mm, punch head diameter of about 0.6mm. with cap models head cap diameter of about 28mm. How to Use Set the punch point with the centre punch. Hold the handle tightly and press in the direction of punching. After the punch is pushed back into the bar for a short time, a powerful spring will spring the punch back and completes the punching point. Tips Automatic center punching is suitable for many types of materials, such as wood, metal, glass, plastic, etc., but not for marble and stainless steel. Please take good protection when using center punch and wear safety glasses. Package includes: 2pcs* center punch positioning tool