Check the listing for details. Thread Detective / Thread Identifier Mini Metric and SAE / Inch Set. Condition: New. Listed at 46.48 USD. NEW, Thread Detective / Thread Identifier Mini Metric and SAE / Inch Set, 162454, Thread checkers, Both metric and SAE, Easy to Use, The Thread Detective is a precise and easy-to-use thread identifier for both nuts and bolts, consisting of gliding gauges conveniently assembled onto a wire lanyard. It is especially well suited for distinguishing between similar inch and metric threads. Our unique Thread Identifiers (aka thread checkers) are available in Metric, English Standard, and a combo of Metric and English Standard. For your convenience we provide extra-long wire rope for those hard to reach places, as well as loops on each end for convenient hanging. Inch Thread Identifiers contain nut and bolt sizes of 1-64, 1-72, 2-56, 2-64, 3-48, 3-56, 4-40, 4-48, 5-40Metric Thread Identifiers.