Features: The spring structure inside the center punch can provide a strong impact force to complete the work of punching steel plates, wood plates, broken windows, etc. non-slip shell manufactured by finishing is durable. After pressing hard, the impact is triggered accurately, and with the impact tip, it is easy to locate and break the glass on the high-hardness metal. describe: Name: Automatic Center Punching Locator Usage: Align the positioning point with a heavy head, firmly hold the handle and press it towards the direction of the punch. After the punch is pressed back into the rod for a short period, a strong spring will vigorously eject the punch, creating a pit for the dots, without the need to cooperate with tools such as a hammer, which is simple and easy to use. size: 128mm Material: steel colour: silver+black Package Contents: 2 x Automatic center punch positioner 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.