- Complete 26-Piece Set: This nut and bolt thread checker features 12 metric and 14 imperial sizes, ensuring comprehensive coverage of the most common specifications for precise measurement of thread pitch and diameter. An essential tool for mechanics and DIY enthusiasts alike. - Dual-Scale Accuracy: The measuring tools are color-coded—metric in red and imperial in blue—allowing for quick and easy identification of nut and bolt sizes. Constructed from durable aluminum alloy, they are designed for long-lasting use in workshops or garages. - Space-Saving Design: Each detachable measuring tool fits easily into tight spaces, making it ideal for a range of applications including automotive repairs, machinery maintenance, and household projects. - Organized Storage Box: The included foam-lined compartment securely holds all 26 pieces, featuring clear size markings for effortless organization. This design eliminates the hassle of lost tools or cluttered workspaces, keeping everything neat and easily accessible. This thread checker set is perfect for anyone needing accurate measurements in automotive or mechanical work, making it a valuable addition to your toolkit.