Product Description Discover the ultimate convenience in thread identification with our 28-Size Nut and Bolt Thread Checker. Crafted from carbon steel and adhering to the stringent Go andamp; No Go Class 2B ANSI standards, this tool offers unmatched precision and reliability for both professionals and DIY enthusiasts. Key Features: High Precision Carbon Steel Construction: Machined to perfection, our thread checker ensures accurate conformity to both inch and metric sizes, making it an indispensable tool in any toolkit. Comprehensive Size Range: Effortlessly identify 28 different sizes, ranging from M4 x 0.7 to M14 x 2.0 in metric and 6 - 32 Fine to 1/2 - 20 Fine in inch threads, covering the most commonly used sizes in various applications. User-Friendly Dual Scale Design: Featuring etched inch and centimeter scales on its rim, our thread checker allows for quick and precise identification. Its readability and durability are unmatched, ensuring you get the right measurements every time. Versatile and Convenient: Whether mounted on the wall for easy access or stored in your toolbox for on-the-go tasks, this thread checker is designed for flexibility. Its compact size (50102.5cm) and reserved mounting holes make it perfect for both stationary and mobile use. Professional and DIY Applications: Ideal for a wide range of applications, from automotive repairs to general household maintenance, ensuring you always have the right tool at hand. After-Sales Service: Your satisfaction is our priority. Should you have any questions or concerns about your Nut and Bolt Thread Checker, our dedicated service team is here to provide a professional and satisfactory solution. Notes: While every effort is made to ensure color accuracy, please note there may be slight variations between the product images and the actual item. Dimensions are manually measured and may exhibit minor discrepancies. Package Contents: 1 Nut and Bolt Thread Checker Empower yourself with the right tool for the job. Our Nut and Bolt Thread Checker is not just a tool, but a reliable partner in your projects, ensuring accuracy and efficiency in every task. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.