Features: Ensure precise thread measurement and quick matching with our Screw Nut and Bolt Thread Checker, reduce installation errors efficiently. Featured 28/34 hole design, this tool accommodates various specifications and comes in a noticeable red finish for easy identification and portability. Ideal for mechanical engineers, DIY enthusiasts, automotive repair technicians, and home handcraft experts. Suitable for on site construction, home repairs, and professional maintenance tasks. Crafted from aluminum, this manual tool set i essential addition to your collection, providing reliability for threading needs. Specifications: Component:Aluminum Type:28 Hole/34 Hole/28 Hole Black and Red 28 Hole:Approx.41.9cm/16.5inch 34 Hole:Approx.43cm/16.93inch Package Includes: 1Pc Nut and Bolt Thread Checker note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.