[Anodized Aluminum] This thread tester is made of stainless steel and aluminum, which ensures that the product can be used in time. And the anodized aluminum surface keeps this nut and bolt thread tester anti-rust. More importantly, it makes this yarn gauge tester comfortable to use and hold. This standard and metric thread checker is a symbol of comfort in your life. [Time Saving] This nut and bolt thread tester can save you time by identifying the thread size and pitch of nuts and bolts within 30 seconds. No more mixed screws and nuts in a messy toolbox. Quickly arrange nuts and bolts in a case. A game changer and time savings could prevent you from buying other measuring tools. [Unique Design] Our thread tester has a non-slip pad that ensures stability and has more functions than you thought. This identifier has a scale of measures from 0 to 6 inches and 0 to 15 cm on both sides. This bolt and nut tester also includes a hanging hole design, which means it is easy to store. The non-slip pad design could also prevent damage to the surface of your workbench. [Accurate Scale] This inch and metric nut and bolt thread tester has a high-precision thread size, including 14 metric and 14 standard (inch) sizes. It will facilitate the classification of nuts and bolts. And the whole scale is made with professional engraving technology which ensures our nut and bolt thread tester can be used and last for a long time., Manufacturer: Bumdenuu