Positioner Center drill automatic spring positioner center punch feature: Position the tip, mark the point and align the tip of the drill with the marked area. The comfortable ball head supports the center punch during use, making the punching easier and more precise. For some materials, it is easy to slip off when positioning the holes. Use the center punch to the hole in the first position to facilitate the open hole behind the screw. main feature Wide range of uses: Very suitable for marking and perforating on wood, metal, glass, plastic, leather or wall surfaces. Suitable for DIY, home and general construction/engineering. Grip: The non-slip knurled surface and the precisely centered tip increase force control to make your project more precise holes. High-quality material selection: The head punch needle is made of high-speed steel with high hardness. It can withstand strong impact, wear and corrosion, thereby prolonging the service life of the punch. Repeatable impact: The 5-inch spring-type automatic center punch can punch holes to mark the starting point, and the red impact plug is ABS plastic, which can increase or decrease the impact force. Instructions Align the positioning point with the heavy head, hold the handle firmly, and press firmly in the direction of the punch. After the punch is pressed back into the rod for a short period of time, the powerful spring will force the punch to out, creating dents on each punch, no need to use tools such as hammers, and easy to use. Size: 13.5x3cm Package includes: 1 x Semi-automatic locator