describe: HIGH QUALITY - The center punch is made of high-quality steel with a black and chrome-plated surface, is wear-resistant, rust-proof and has a long service life. The non-slip knurled texture provides additional grip for comfortable and precise handling. The needles are made of high quality chrome vanadium steel and the service life is three to five times longer than conventional needles. ADJUSTABLE TENSION - With the tension screw, you can adjust the tension by turning the knob adjust the optimal tension for your work. Adjustable spring tension, suitable for light and heavy punching, scoring, punching, stacking. One-handed operation - The punch press is easy to use: simply adjust the desired spring tension, press firmly on the workpiece to automatically center the stamp and score accurately, no hammer required. The spring punch is durable, impact-resistant and quick to use. Wide range of applications - the multifunctional automatic hole punch is suitable for a variety of tasks, such as marking materials such as automotive emergency tools , furniture installation, mechanical repairs, reciprocating emergency hammers, etc. Suitable for finding steel, aluminum, iron, PVC, steel, walls, wood, etc., also as an emergency glass breaking tool for side windows. PACKAGE INCLUDES - 2 pieces 5 inch heavy duty automatic center punch with 2 replacement needles, portable size, non-slip spring hole punch tool, precise marking and positioning without hammer, save money, time and energy.