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/40in Inches (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, 1/2-20 Metric (12): M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x1.25, M10x1.0, M10x1.25, M10x1.5, M12x1.25, M12x1.5, M12x .75 Color: Silver & Black Material: steel Package Contents: 1 set x Thread tester Only 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.