44-piece Thread Gauge Kit — 23 Imperial (inch) + 21 Metric What it does: Inspect and identify nut and screw threads quickly and reliably. The kit covers 44 common thread sizes so you can match threads for repairs, replacements, or quality checks. Key benefits Fast identification: Clearly labeled gauges let you determine thread size without guesswork, reducing downtime and wrong-parts errors. Works in tight spaces: Compact, slim gauges are designed for measuring threads in confined or enclosed areas where bulky tools won’t fit. Built to last: Gauges are made from high-quality carbon steel with high hardness, wear resistance, and impact resistance for long service life. Organized and accessible: Supplied in a sorting box with clear nut and screw labels; metric gauges are marked in black and inch gauges in silver for quick differentiation. Important attributes Contents: 44 threaded gauges total — 23 imperial (inch) specifications and 21 metric specifications. Function: For inspection and identification of nut and screw threads. Material: Carbon steel with high hardness and resistance to wear and shock. Packaging: Includes a storage box with labeled slots for easy, fast selection and secure storage. Practical use scenarios Automotive repair: Identify worn or replacement nuts and bolts in engine bays and other cramped areas where access is limited. Field maintenance and service: Carry the compact kit for on-site repairs of mechanical equipment, plumbing, or machinery when you need fast confirmation of thread size. Manufacturing and assembly checks: Use the gauges for quick in-process inspections or final checks to verify correct thread types before assembly. Simple, durable, and portable — this kit gives technicians, mechanics, and maintenance personnel a straightforward way to identify and verify both metric and inch threads.