Ensure precise identification of nut and bolt threads with this comprehensive Thread Checker set, designed for both inch and metric measurements. Crafted from robust zinc alloy, this durable thread gauge kit features 44 male and female gauges, including 21 metric sizes and 23 inch sizes, making it an essential tool for mechanics, engineers, and DIY enthusiasts alike. Key Features: · Dual-Sided Printing for Accuracy: Clearly marked with both inch and metric thread sizes on opposite sides, this thread checker allows quick and accurate identification, eliminating guesswork. · Extensive Size Range: Includes 21 black metric thread sizes (M3x0.5 to M24x3.0) and 23 silver inch thread sizes (6-32 to 1-12), covering a wide variety of standard threads for versatile applications. · Durable Zinc Alloy Construction: Made from high-quality zinc alloy, this thread checker is built to withstand frequent use while maintaining accuracy and reliability over time. · Male and Female Thread Gauges: Equipped with both external and internal thread gauges, this set provides a complete solution for checking nuts, bolts, screws, and threaded fasteners. · Time-Saving and Convenient: Designed to enhance work efficiency, this thread checker simplifies thread identification, reducing errors and speeding up repair, maintenance, and assembly tasks. Specifications: · Item Type: Thread Checker · Material: Zinc Alloy · Weight: Approx. 963g / 34oz · Metric Sizes (Black): M3x0.5, M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x0.25, M10x0.25, M10x1.5, M12x1.5, M14x2.0, M16x1.5, M16x2.0, M20x1.5, M20x2.5, M24x2.0, M24x3.0 · Inch Sizes (Silver): 6-32, 6-40, 8-32, 10-24, 10-32, 1/4-20, 1/4-28, 5/16-18, 5/16-24, 3/8-16, 3/8-24, 7/16-14, 7/16-20, 1/2-13, 1/2-20, 9/16-12, 9/16-18, 5/8-11, 5/8-18, 3/4-10, 3/4-16, 1-8, 1-12 This Thread Checker set is an indispensable tool for anyone working with threaded fasteners, providing precise, reliable thread identification in a durable, easy-to-use format. Improve your workflow and avoid costly mistakes with this versatile and comprehensive thread gauge kit. 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.