High Quality - The center punch is made of high quality steel body, black and chrome finish, wear resisting and rust proof to prolong the punch life. Anti-slip knurled texture for extra grip, offering you very comfortable and precise operation.The needle is made of high-quality chrome vanadium steel, and its service life is 3-5 times that of ordinary needles Adjustable Tension - With the tension screw, you can adjust the best tension apply on your work by simply spin the knob. Spring tension adjusts for light or heavy strokes, marking, punching and staking. One Handed Operation - This punch is easy to use, simply adjust to desired spring tension, press firmly against work piece for automatic center punch, it makes accurate marks without the need for a hammer. The spring loaded center punch is sturdy, durable and has high impact force, which can be used quickly. Widely Used - Multi-functional automatic center punch is suitable for a variety of tasks, such as mark on materials, as car emergency tools, furniture installation, machine maintenance, alternative emergency hammer etc. suitable for positioning steel, aluminum, iron, PVC, steel, walls, wood, etc., Also can be used for vehicle emergencies as a side window rescue glass breaking tool. Package Including - 2Pcs 5" heavy-duty automatic center punch And 2 spare needles, portable size, non-slip spring loaded punch tools can accurate marking and positioning can be carried out without a hammer, save you time and energy.