Wide Application Ranges: Suitable for professional and hobbyists in automotive repair, machinery maintenance, electrical installations, and home DIYer tasks, solving thread verification needs across multiple scenarios Portable Storage Case: Comes with a sturdy carrying case to keep all tools organized and protected during transport, perfect for workshops, factories, and on site repairs Premium Stainless Steel: Made from stainless steel for excellent resistance and durability, outperforming traditional steel by 3 times in harsh or humid industrial environments Clear Size Markings: Each tool features size engravings for quick identification, eliminating the hassle of searching for different specifications and speeding up inspection processes Complete Thread Checking set: This 44 piece set includes various nut and bolt thread checkers covering multiple specifications, ideal for mechanical repairs, assembly work, and DIYer projects to ensures proper thread matching and, Manufacturer: ordinarYone