Feature: 1. Nut and Bolt Thread Checker Kit: The 26PCS nut and bolt thread checker kit is manufactured with high accuracy to provide you with accurate thread inspection results. 2. Versatile Design: With this combination of tools, you can easily inspect threads of different specifications for nuts and bolts with a wide range of nominal diameters. 3. Convenient and Practical: The tool set includes a variety of sizes of male inch thread inspectors to meet your different inspection needs and simplify your workflow. 4. Carbon Steel, ABS Material: The use of high grade carbon steel, ABS material, durable and reliable, can be used for a long time, with reliability. 5. Easy to Operate: The tool design is simple and easy to use, ideal for professional repair personnel and DIY enthusiasts. Specification: Item Type: Nut Bolt Thread Checker Weight: 500g/17.6oz Material: Carbon steel, ABS 14 Inch Size: 6-32, 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 12 Metric Size: M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8X0.25, M10x1.0, M10X0.25, M10x1.5, M12x1.5, M12x1.75.. Package List: 26 x Nuts and Bolts1 x Storage Box