Features 1、[Versatile Sizes] Our nut and bolt thread checker set offers 44 sizes of gauges, suitable for both inch and metric sizes, ensuring you have the right tool for every job. 2、[Multi Functional] The bolt and nut identifier gauge set covers most bolts encountered in daily life. Simply refer to the size chart for specific information. 3、[Quick Size Identification] Simply thread your nut or bolt onto the gauge, and within seconds, you will receive accurate size information, making work efficient and easy. 4、[Convenient Measuring] Each removable gauge in the kit allows you to measure pitch in narrow or confined areas, providing you with flexibility and convenience. 5、[Wide Application] Suitable for plumbers, handymen, repair technicians, mechanics, engineers, providing an integrated solution for measuring thread pitch. Specification Item Type: Nut and Bolt Thread Checker Material: Aluminum Specifications: Metric Size: M3x0.5, M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x1.25, M10x1.0, M10x1.25, M10x1.5, M12x1.25, M12x1.5, M12x1.75, M14x1.5, M14x2.0, M16x1.5, M16x2.0, M20x1.5, M20x2.5, M24x2.0, M24x3.0 Inch Size: 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 Package List 44 x Nut and Bolt Thread Checker 1 x Storage Box