【50 Pcs Comprehensive Thread Checker Kit】 Our thread checker standard and metric kits includes 27 SAE (Standard/Imperial) and 23 Metric thread gauges, covering a wide range of sizes from 2-56 UNC to 1-12 UNF and M2x0.4 to M20x2.5. It's the ultimate bolt size finder and thread pitch gauge for professionals and DIYers
【Easy Identification & Portable Storage】 Each detachable thread gauge is securely held in a case. Easily remove the exact thread checker you need for quick identification in narrow areas or take it to the hardware store to find the perfect matching nut or bolt
【Durable & Color-Coded Design】 The nut and bolt thread checker made from high-quality aluminum with laser-engraved, friction-resistant markings for long-lasting legibility. SAE sizes are color-coded in BLUE, and Metric sizes are in RED, allowing for instant recognition and reducing errors