1Made from high hardness HSS, the automatic center punch is of strong strength and long durability 2It's easy to operate, very labor-saving, and the red guide cap functions for cushioning, offering comfort for gripping 3When 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 4Widely used for marking and starting a hole for drilling without the bit 5The center hole punch is also an excellent tool stored in the car to be used to break the window in an emergency situation 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. It's easy to operate, very labor-saving, and the red guide cap functions for cushioning, offering comfort for gripping. 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: Condition: 100% Brand New Material: HSS Body, Rubber Guide Cap Type: 1, 2, 3, 4, 5(optional) 1: Yellow Center Punch(S) 2: Yellow Center Punch(S) with Red Guide Cap 3: Black Center Punch 4: Silver Center Punch with Red Guide Cap 5: Yellow Center Punch(L) Hardness: 58~65HRC Center Punch Length( 1 2 3 4): Approx. 13cm/5.12in Center Punch Length( 5): Approx. 15cm/5.91in Weight: Approx. 63~113g 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.