- 44-Piece Nut and Bolt Thread Checker : This comprehensive set features 44 individually stored thread gauges in a well-organized foam holder, ensuring you can easily find the correct size for any nut or bolt. Perfect for tight spaces and various applications. - Precision Identification : Each gauge is manufactured with high precision and comes in both standard (blue for SAE) and metric (red for metric) sizes. The clear color coding simplifies identification, while laser-etched markings on both sides of each gauge eliminate the need to flip it over. - Comprehensive Size Range : The kit includes 23 standard sizes (1-12, 1-8, 3/4-16, etc.) and 21 metric sizes (M3-0.5, M4-0.7, M5-0.8, etc.), covering a wide variety of thread types for versatile use. This ensures compatibility with numerous projects and repairs. - User-Friendly Design : To use the thread checker, simply insert the appropriate gauge into the threads and refer to the accompanying chart for quick size determination. This intuitive design makes it an essential tool for engineers, machinists, and DIY enthusiasts alike. - Practical Applications : Ideal for automotive repairs, home improvement projects, and machinery maintenance, this thread gauge kit provides the reliability and precision needed to ensure proper fit and function in your work. This product combines functionality, compatibility, and ease of use, making it a valuable addition to any toolkit.