Features: Brand new and high quality Quickly identify and measure thread sizes accurately with the Nut and Bolt Thread Gauges. This set of thread gauges includes 26 pieces for convenient and precise thread identification. Suitable for mechanics, enthusiasts, and individuals working with nuts and bolts. Perfect for various applications such as mechanical repairs, equipment maintenance, and home improvement projects. Upgrades your tool box with this thread gauge set. Enhances your work efficiency today! Specifications: Material: 435 alloy steel Package Includes: 26pcs Nut & Bolt Thread Gauges note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.