General description Comprehensive Thread Checking Tool: Equipped with 26 dual male/female gauges covering 14 inch and 12 metric sizes, this Nut & Bolt Identifier is indispensable for consistently verifying thread sizes. Perfect for eliminating guesswork and ensuring compatibility. Stainless Steel Construction: Constructed from premium metal, this tool is robust and built to endure rigorous usage, promising years of reliable service in any workshop setting. Each gauge is expertly crafted to offer both durability and precision. Technical specifications Metric Sizes: M4x0.7 to M12x1.75 Inch Sizes: 6-32 to 1/2-20 Material: Stainless Steel with Black Oxide and Zinc-Plated finishes Measurement allowed error: +/- 1-3cm Usage The clear, permanently stamped markings on each gauge allow for quick identification and use, making it a valuable tool for any DIY tasks. Designed to optimize your workflow, the gauges rotate freely on a wire cable, allowing you to quickly and accurately determine