Lug-Thread Detective®, Metric & Inch
The Thread Detective® is the most useful and necessary tool in any mechanic's tool box, tire shop, automotive repair shop, and in every gearhead’s garage. The Thread Detective® is a precise, portable and easy-to-use thread identifier for nuts, bolts, tapped holes and mounted or affixed studs.
Each individual steel identifier is permanently laser etched with the thread size and features an internal female threaded hole accompanied by a male threaded stud
Our 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.