Improve drilling efficiency and quality: With the help of a 5-inch automatic center punch, an exact drilling position can be created on the workpiece. This prevents the drill from shifting or deviating, which results in incorrect or sloppy drilling. This saves time and material during drilling. Multifunctional spring-loaded center punch: The automatic center punch can create drilling positions on various workpiece materials and shapes, such as metal, wood, plastic, glass, etc. It expands the range of drilling applications. It can also be used in emergencies and to break broken windows. Durability and quality: Center punches are made of high-quality steel that is hardened and tempered at the tip, while the head remains soft to withstand spring action. They have a sharp and precise tip angle that can create a clear and consistent indentation in various workpiece materials. Ease of use and convenience: Automatic center punches require no hammer and can be operated with one hand. They have a serrated or textured surface for better control. For lighter markings, you can simply reduce the tension by unscrewing the end cap. Features an adjustable spring-loaded design for variable impact force and replaceable tips. Contents: 2 automatic center punches, 5 inches