PACKAGE: 2 x automatic centre punch + 2 x replacement punch tip, the automatic center punch is 130mm long, 12mm in diameter, and 4mm in diameter at the tip, enough for your daily replacement and use. HIGH QUALITY: The center hole punch is made of high-speed steel punch and carbon steel handle, high strength, high hardness, strong and durable, not easy to wear, and has a long service life. Easy to Use: Just adjust the nail punch to the desired spring tension, press the handle hard for automatic center punching, you can make accurate marks without the help of a hammer, easy to use. ANTI-SLIP DESIGN: It is ergonomic and adopts a non-slip rhombus pattern design, which can increase the friction between the hand and the positioning punch handle when in use, providing you with comfortable and precise operation. WIDE USE: The automatic center punch is suitable for punching positioning holes in wood, metal, glass, plastic, steel, leather, cardboard or wall, etc.; it can also be used to smash car windows, so that you can use it in emergency situations escape.