Features 1、Excellent Stainless Steel Material: This bolt size and thread gauge is made of excellent stainless steel material, which is sturdy and abrasion resistant, not easy to be damaged, and has a long service life. 2、Multifunctional: This thread identifier gauge is multifunctional with 34 male and female gauges, including 18 inch and 16 metric sizes, for all your nut and bolt inspection needs. Thread sizes are permanently printed on each gauge, making it easy to identify the correct size for your project. 3、Detachable Design: This nut and bolt checker comes with removable wire loops on both ends that you can open or close to use anywhere, providing more possibilities for space utilization. You can also choose which individual or parts to use, or remove frequently used parts and use them in a single wire loop. 4、Time Saving And Convenient: This nut and bolt size gauge is designed to increase your efficiency, save time and eliminate guesswork, using individual gauges that rotate freely on the cable, you can quickly verify thread sizes and complete projects faster. 5、Compact And Lightweight: This nut and bolt thread checker is small in size and light in weight, which makes it very convenient to carry and use, and can be used in a variety of situations. Specification Item Type: Nut And Bolt Thread Checker Material: Stainless Steel Size: 18 Imperial Size: 256, 440, 632, 832, 1024, 1032, 1/420, 1/428, 5/1618, 5/1624, 3/816, 3/824, 7/1614, 7/1620, 1/213, 1/220, 9/1618, 5/818 / 16 Metric Size: M20.4, M30.5, M40.7, M50.8, M61.0, M71.0, M81.0, M81.25, M101.0, M101.25, M101.5, M121.25, M121.5, M121.75, M141.5, M142.0 Package List 1 x Nut and Bolt Size Gauge 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.