1、Precise Thread Checker: This thread checker is specifically designed to check fixed bolts or threaded holes in confined area, ensures accurate measurement. 2、Dual Unit: With 15 metric and 19 imperial sizes, this thread gauge allows for versatile measurements of different bolt and thread sizes, meeting all your requirements. 3、Convenient Storage: Featuring two hanging holes at the top, this thread gauge can be easily hung on the wall for organized storage when not in use. 4、Corrosion Resistance: Made from carbon steel, this thread identifier is sturdy and anti corrosive, ensuring longevity and reliable performance. 5、Wide Applications: Whether for automotive repairs, machinery maintenance, or other industries, this thread checker provides the necessary measurements. 1 x Nut and Bolt Thread Checker Item Type: Nut and Bolt Thread CheckerMaterial: Carbon Steel15 Metric Specifications: 4mm x 0.7, 5mm x 0.8, 6mm x 1, 7mm x 1, 8mm x 1, 8mm x 1.25, 10mm x 1, 10mm x 1.25, 10mm x 1.5, 12mm x 1.25, 12mm x 1.5, 12mm x 1.75, 14mm x 1.5, 14mm x 2, 16mm x 219 Imperial Specifications: 6-32, 8-32, 10-24, 10-32, 12-24, 1/4-20 Coarse, 1/4-28 Fine, 5/16-18 Coarse, 5/16-24 Fine, 3/8-16 Coarse, 3/8-24 Fine, 7/16-14 Coarse, 7/16-20 Fine, 1/2-13 Coarse, 1/2-20 Fine, 5/8-11 Coat, 5/8-18 Fine, 3/4-10 Coat, 3/4-16 Fine