Product Overview 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 gearheads 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. Metric M12x1.25 M12x1.5 M12x1.75 M14x1.5 M14x2 Inch 7/16-20 1/2-20 9/16-18 Reviews (No reviews yet) Write a Review