QUICK AND ACCURATE MEASUREMENT: Designed for fast and precise thread size verification, this tool eliminates guesswork, saving you time and effort on the job. Quickly confirm workpiece size by sliding the knob with one hand to tighten and measure. KEYCHAIN ATTACHMENT: Equipped with a keychain loop, this checker can be conveniently attached to your keys or belt, ensuring it's always within reach when you need it. EASY-TO-READ MARKINGS: Clearly engraved size markings provide easy identification of thread sizes, reducing the risk of errors and making it a reliable tool for professionals and DIY enthusiasts alike. CONVENIENT UNIT READING DESIGN: This features both metric and imperial units, providing versatility and convenience., ensuring accurate measurements for any project. CONSTRUCTION: Made from high-quality, corrosion-resistant material, this tool is built to withstand heavy use and harsh environments, ensuring long-lasting performance. Please note: the physical slightly color