[Premium Quality] This automatic center punch is made of high-quality stainless steel, black and chrome finish,its sturdy and reliable.The middle handle surface is adopted anti-slip knurled texture, Its prevents slippage and allows more precise positioning of the borehole. The needle is made of sharp steel tip, hardness and strong impact, its made the positioning faster. | [Adjustable Spring Tension] This spring loaded center hole punch design uses adjustable Spring Tension screw, you only need to rotate the cover to get the suitable impact strength to marking, punching and staking, accurate positioning without a hammer. | [Easy One Handed Use] This center punch for metal is super easy to use, You can adjust the tension in the spring by twisting the top, put point where you want a mark, then depress the top end until it clicks and pops and the mark is made. It keeps the drill bit from roaming about during the initial drill process. | [Wide Applications]Automatic center hole punch is suitable for a variety of Marked scene. such as furnitures installatio, machines maintenance, suitable for steel, iron, plastic, wood and wall and other materials drilling.The center punch also be used in vehicle emergencies to break the window glass rescue tools.Tthis is an all-in-one tool, Lightweight and durable, we would recommend you to have them in your tool kit.