Features: Ensure precise measurements with our Bolt Thread Checker, featured 28 hole designs suited various bolt thread size for great versatilities. Use selected aluminum alloy, this tool is lightweight and portable, with coating that resists rust and clear Marking for easy readability. Great for mechanical engineers, automotive repair technicians, handmade enthusiasts, and professional assembly workers searching great tool. Perfect for use in workshop production lines, home toolboxes, auto repair shops, and construction site where precision is priority. Enhancing your toolkit with this hand tool, designs to deliver accuracy and efficiency in every task, making it great for any serious craftsmans. Specifications: Component: Aluminium alloy Product Dimension: As pictures shown Type Option: 01/02 Package Includes: 1PC Bolt Thread Checker note: Please allow 1-2cm error due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color the item.