[High quality] This automatic center punch is made of high quality stainless steel, which is durable. [Adjustable spring tension] This spring-loaded central hole punching design uses adjustable spring tension screws, so you can mark, punch and paste with appropriate impact strength by simply rotating the cover, and you can accurately locate without a hammer. [One-handed use] This metal center punch is very simple to use. You can adjust the tension of the spring by twisting the top, place the point you want to mark, and then press the top until it clicks and marks. It can prevent the drill bit from during the initial drilling. [Widely used] The automatic center punch is suitable for marking scenes. Such installation, machine maintenance, suitable for drilling materials such as steel, iron, plastic, wood and walls. Central punching is also used in vehicle emergencies to break the window glass rescue tool. This is an all-in-one tool, which is light and durable. We recommend that you put it in the toolkit. Colour:silver+black Material:steel Package Contents: 4 x center punch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.