Automatic centering spring loaded to break car glass 155mm Description: High-quality material: automatic centering tool is made of high-carbon steel, sturdy and durable, spring is made of stainless steel Easy to use: automatic punch with center hole and press the handle towards the punch to mark Adjustable: Spring-loaded pointer with tension screws, you can get variable impact force by simply turning the cover, adjust the best tension applied to work Practical centering point: The center scoring tool can be used to mark the center of the point on a metal or wooden board. Can drilling hole and preventing the drill bit from slipping or tilting Multifunctional: The center point can be used not only for marking and positioning wood, metal, and other materials, but also as a survival tool when you need to break the side window in your vehicle Specification: Material: Coating Material: High Carbon Steel Spring Material: Stainless Steel Size Chart: (optional) For 128mm, diameter 12mm for 155mm ,,diameter 15mm The package includes: 1 piece automatic center point Note: 1. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. 3.