The Thread Checker Set is an essential 44-piece tool kit designed for both professional mechanics and DIY enthusiasts. This comprehensive set includes both inch and metric thread gauges, making it invaluable for identifying and verifying thread sizes on nuts, bolts, and fasteners. Perfect for working in tight spaces and enclosed areas where thread measurement can be challenging, this identifier tool helps eliminate guesswork and ensures precise matching. The set allows you to quickly determine thread pitch and size, saving time and preventing the frustration of trial-and-error fitting. Whether you're restoring vehicles, performing maintenance, or working on machinery, this versatile thread checker set is an indispensable addition to your toolbox. Each gauge is clearly marked for easy identification, helping you efficiently organize and complete your repair tasks. Comprehensive Nut and Bolt Thread Checker: This 44 piece thread checker set includes 23 imperial and 21 metric sizes , covering most common nut, bolt, and screw threads. Perfect for identifying both inch and metric fasteners, eliminating the need for multiple tools. (23 PCS Inch Size:1-12,1-8,3/4-16, 3/4-10, 5/8-18, 5/8-11, 9/16-18, 9/16-12, 1/2-20, 1/2-13, 7/16-20, 7/16-14, 3/8-24, 3/8-16, 5/16-24, 5/16-18, 1/4-28, 1/4-20, 10-32, 10-24, 8-32, 6-40, 6-32;21 PCS Metric Size: M3-0.5, M4-0.7, M5-0.8, M6-1.0, M7-1.0, M8-1.0, M8-1.25, M10-1.0, M10-1.25, M10-1.5, M12-1.25, M12-1.5, M12-1.75, M14-1.5, M14-2.0,M16-1.5, M16-2.0, M20-1.5, M20-2.5, M24-2.0, M24-3.0;) 3 Ways To Read Size: This thread gauge tool kit has three different ways to clearly read the sizes, by engraving the sizes on the thread gauge, printing the sizes on the sticker and screen printing the sizes on the foam. Each size printed on the sticker chart and foam corresponds to the thread gauge size, when you need to do a thread check, you can see the size more clearly and intuitively and take it out Easy to Use: Unlike bulky cable or plate gauges, these removable thread gauge sae and metric units enable instant nut measuring . Each bolt gauge is clearly engraved with measurements, Simply detach the needed nut thread gauge and verify threads in seconds The checker’s intuitive layout allows quick size matching: simply test bolts/nuts against the gauges until they thread smoothly. Besides, the color-coded (metric/imperial) and numbered slots reduce sorting errors. Perfect for Tight Spaces: The bolt and nut sizer is designed for enclosed areas and fixed fasteners. No need to rotate heavy thread gauge set when working in hard-to-reach spots. The compact size of the nut and bolt sizer makes it easy to use in small workshops, garages, or on job sites with limited space With Organized Storage Case: Each thread gauge is securely mounted in a precision-cut foam holder, keeping your workspace tidy. The foam tray prevents loss and damage, allowing quick access to the right size. Lightweight yet sturdy design of the nut and bolt thread checker set saves storage space in toolboxes or workbenches. Good thread identifier set you're worth a try