Points: 1.Fine Quality Materials - Thread Tester is made of high-quality stainless steel material. Galvanized for imperial gauges and black oxidized for metric gauges. Resistant to rust and corrosion for longer service life.2.A Complete Set - Thread Detector includes 26 male\/female gauges, 14 inch and 12 metric. Each dimension has a nut and bolt checker on the same spec. A single gauge spins freely on the wire rope for quick thread verification.3. Hanging - Bolt Thread Detector has a detachable wire loop design. Hang it to your toolbox in the workshop or garage. Easy to use and store.4.Practical Tools - Bolt Thread Tester No more bending over for a nut\/bolt. It can improve the efficiency of your maintenance. Allows you to determine the size and thread of the nuts and bolts before heading to the to match them.5.Widely Used - Nut and Bolt Thread Tester for mechanical repairs, or common threads in plumbing, air connections, etc. Save your precious time. Very durable and functional.Description: Nut and Bolt Thread Tester for mechanical repairs, or common threads in plumbing, air connections. Save your precious time. Very durable and functional.Specification:Total length: about 101.6CM\/40inInches (14): 6-32, 8-32, 10-24, 10-32, 1\/4-20, 1\/4-28, 5\/16-18, 5\/16-24, 3\/8-16 , 3\/8-24, 7\/16-14, 7\/16-20, 1\/2-13, 1\/2-20Metric (12): M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x1.25, M10x1.0, M10x1.25, M10x1.5, M12x1.25, M12x1.5, M12x .75Color: Silver & BlackMaterial: steelPackage Contents:1 set x Thread testerOnly the above package content, other products 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.