1Aluminum Alloy Material: Made from premium aluminum alloy, this nut and bolt thread checker set is built to last, ensuring long term use without damage or deformation. 2High Accuracy: With the nut and bolt thread checker, you can easily and accurately measure thread sizes and details, eliminating any guesswork or errors, improving work efficiency. 3Various Size Options: Available in a range of size specifications, the thread checker caters to different needs and applications, providing a comprehensive solution for all your threading needs. 4Portable and Convenient: The thread checker set comes with an organizer panel, making it easy to carry and store, ensuring that you can perform thread checks anytime and anywhere. 5Applications: Whether you are involved in automotive repairs, plumbing projects, or industrial applications, this nut and bolt thread checker is a versatile tool in your toolkit.