Description: Durable and Efficient: The Bol-t and Thread Gauge is built to last and provides accurate measurements for 28 different thread sizes, making it easy to identify the correct nut and bol-t Easy-to-Operate : With its user-friendly interface, this Bol-t Size and Thread Gauge allows for quick and hassle-free identification of metric bol-t and nut sizes, ensuring a smooth operation every time Quick Thread Checking: The 28 Thread Checker Size Nut and Bol-t ensures that you never have to worry about using the wrong thread size again. Simply match the bol-t or nut to the corresponding gauge slot for a fit every time Convenient and Reliable: The Bol-t and Nut Identifier Gauge provides a handy tool for both professionals and DIY enthusiasts. Its compact size and clear markings make it easy to use and reliable in any project Accurate Measurements Made Easy: This Metric Bol-t Nut Identifier Gauge takes the guesswork out of thread identification. Its precision measurements enable you to find the right bol-t and nut combination effortlessly, saving you time and effort Specification: Name: for Bolt Thread Checker Material: Aluminum Alloy Color: Black,Red(Optional) Size:With 14 metric and 14 standard sizes(as picture) Package Includes: 1PCS for Bolt Nut Identifier Gauge