Creates a dimple on the workpiece to provide a starting point that prevents screws and drills from wandering. Features an automatic spring-driven strike mechanism that activates when pressed against a surface. Adjustable mechanism regulates striking force. Deeply knurled surface ensures nonslip control. - Color: Golden - Material: High Steel - Size: Approximately 13 cm (5.1 inches) in length - Easier to Drill: Equipped with a reliable spring-loaded automatic hand punch that delivers a precise mark on wood, metal, steel, aluminum, brass, copper, and other materials - Adjustable Tension: Includes an adjustable tension screw for customized striking force, enabling convenient one-handed operation without the need for hammering - Emergency Use: Suitable for use on glass surfaces such as car windows, allowing for quick escape in emergency situations - Designed to be used at the edge of a window where it can effectively break the glass, facilitating safe exit