The Inch & Metric is an accurate and easy-to-use thread identifier for both nuts and bolts.Each individual gauge features a male threaded stud on one end and a female threaded hole on the other.The is especially well suited for distinguishing between similar inch and metric threads.Conveniently assembled onto a wire loop, it's the perfect portable solution! With 26 male/female gauges - 14 inch & 12 metric - on a convenient cable loop, you can quickly and easily check to see if the sizes match before buying replacements.Save valuable time and avoid returns with specialty tools. Versatility- Whether you're a mechanic, homeowner, or construction worker, this bolt size and thread gauge offers versatility for all kinds of projects.Quickly check nuts and bolts on appliances, tools, plumbing, air, and gas for easy repair or replacement. Colour:gold+red+blue Material:Metal Size:13.69 x 9.70 x 3.71 cm Package Contents: 1 x nut and bolt gauge set Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/- 1-3cm.