Inch Thread Identifiers contain nut and bolt sizes of: 5/8-11, 5/8-18, 3/4-10, 3/4-16, 1-8, 1-12 Metric Thread Identifiers contain nut and bolt sizes of M4x1.5, M14x2.0, M16x1.5, M16x2.0, M20x1.5, M20x2.5, M24x2.0 and M24x3.0

The Jumbo Thread Detective Thread Identifier 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 Thread Detective is equipped with a 3-3/8" (85 mm) ruler for measuring stud lengths. 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. Our Jumbo Thread Checker can be purchased in Inch Only and Metric Only Strands as well as a combination unit containing both strands. Inch Thread Identifiers contain nut and bolt sizes of 5/8-11, 5/8-18, ¾-10, ¾-16, 1-8, 1-12 Metric Thread Identifiers contain nut and bolt sizes of M14 X 1.5, M14 X 2.0, M16 X 1.5, M16 X 2.0, M20 X 1.5, M20 X 2.5, M24 X 2.0, M24 X 3.0