Description: Our automatic center punch is widely used for marking and starting a hole for drilling without the bit "walking" out of alignment, and suitable for letter stamp sets, glass-breaking tools used in rescue work, impact tool for hardness testing, pin presses for electronic assembly, and so on. Features: Made from high hardness HSS, the automatic center punch is of strong strength and long durability. When pressed against the workpiece, the automatic center punch stores energy in a spring, eventually releasing it as an impulse that drives the punch, producing the dimple or hole. Widely used for marking and starting a hole for drilling without the bit "walking" out of alignment. The center hole punch is also an excellent tool stored in the car to be used to break the window in an emergency situation. Specifications: Material: Automatic Center Punch Color: Black Size: 13*2*1.5cm Weight: Approx. 63g Package Included: 1 * Automatic Center Punch Note: 1. Please allow 0~1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.