SUPERIOR QUALITY CONSTRUCTION: Constructed of a sturdy aluminum alloy with SUS304 stainless steel threads, our nut and bolt identifier gauge is designed for durability and longevity. This elaboration not only improves its structural integrity but also ensures that frequent use in any workshop. QUICK IDENTIFICATION: Optimize your work with our thread tester, designed to size nuts and bolts quickly and accurately. With a dual standard and metric design, this tool ensures you easily find the right size to replace damaged or worn parts in your tool kit. WIDE RANGE OF SIZES: Our thread gauge covers a wide range of 28 unique sizes, evenly divided between 14 metric and 14 standard measurements. This versatile range makes it a tool for identifying the specific threads of screws, bolts and nuts, ensuring that you always have the correct fit. MULTIFUNCTIONAL TOOL: Do not check threads, this device is equipped with a dual scale ruler (6 inches and 14 cm), which improves its usefulness. This feature allows for quick measurements of bolt lengths and sizes, making it a practical addition to any professional or home tool kit., Manufacturer: Bumdenuu