The tip of this automatic center punch is made of high-speed hardened steel for high strength and durability. Suitable for punching holes on steel plate, aluminum, copper, wood board, plastic, and other materials. This industrial forge brass center punch gives your drill a starting point and makes it easier for you to use, so it won't slip in tight spots. Have an automatic hand punch tool with a spring-loaded mechanism that actually works and makes a solid mark in wood, metal, steel, aluminum, brass, copper, and more. Because the Industrial Forge Brass Center Punch is equipped with an adjustable tension screw, it can be perfectly adjusted so that it can be used with a simple one-handed operation. Just hammer it.