Product specifications: Material: Knurled steel body + alloy steel tip Color: golden, as shown. Hardness: HRC58-65. Diameter: approx. 12.7 mm. Length: approx. 130 mm. Weight: 70g Package contents: 1 x Automatic Needle Warper (other accessories are not included). Benefits of the product: Simple and precise operation. The handle knurled design prevents slippage. Provides a precise starting point for steel and other solid materials. Allows you to easily mark jobs with one hand before drilling, which prevents slippage of the drill bit. The spring is then forcefully released at the top of the loop to create a central punch (no hammer required). The spring pressure can be adjusted simply by turning the knurled top of the punch. p> Automatically designed for clean and precise drilling in steel, wood and plastic. Product description: < /p> Our largest and strongest punch is the choice of professionals for marking and stamping the hardest metals. it's accurate without the need for a hammer. Impact can be adjusted to use lighter materials. Includes threaded reloaded steel tip. Body diameter: 5 inches. Can be used as a side window rescue tool for vehicle emergencies.