Super Strong 5" Center Punch: Makes drilling easy with an automatic manual punch tool with a spring-loaded mechanism that works and makes a solid mark in wood, metal, steel, aluminum , brass, copper and more. As a car window escape tool, just use it in the corner of your car window and it will break and fall and escape. Adjustable tension: our Spring-loaded center punch design uses spring tension that can be varied and adjusted for light or heavy marking, punching or stitching. Change the striking force at any time to match the surface you're working with. This industrial center punch gives you a starting point for your drill, making it easier so it doesn't slip in tight spots. Replaceable premium steel tip: Made from Made of durable steel, our handy metal punch tool has a cone-shaped steel tip that allows you to safely punch holes in the exact spot without slipping and damaging the work surface. Provides more precise operation and control is durable for long-term use, and the hardened and tempered carbon steel tip can withstand all surfaces. One-handed operation: This automatic one-handed center punch should press with one hand with no hammer required. Use the durable steel tip on a sturdy surface to center where you want the starter hole, and punch the tool down to create the drill marker. Total size of 12, 7 cm, with excellent durability. Consisting of a chrome tip and a high quality stainless steel body, with a non-slip knurled texture giving you very comfortable and precise operation. With the tension screw you can adjust the best Applied tension to your work by simply turning the knob. This will allow you to control the strike pressure of the dual spring body and give you the correct indentation on the materials you are using. The package comes with 2 replacement bits with a hardness of 58.< /p> More than a punch, it is also a safety tool in the car. This product is able to work on glass, which means it can break the car window easily to help you escape in an emergency. In addition, the 12.7 cm dimension is very space-saving in cars. < /p>