Feature: 1. SPECIFICATIONS: This thread checker can easily identify 28 different sizes of bolts and nuts, ranging from M4x0.7 to M14x2.0 metric thread, from 6‑32 coarse to 1/2‑20 fine American thread. 2. DURABLE MATERIALS: The thread identifier board is made of 6061 aluminum alloy, with hard anodized finish, and all threaded pins are made of SUS304 material, rust and corrosion resistance. 3. INCH AND CM SCALES: The edges of the thread measuring gauge has inch and cm etching scales, which are clear and accurate, helping to distinguish the size of bolts and nuts. 4. HIGH ACCURACY: With exquisite workmanship, this thread identifier board has standard sizes to ensure accurate and reliable measurements, improve work efficiency, and reduce errors. 5. WITH WORK GLOVES: This kit is equipped with a pair of work gloves to protect hands from accidental injury, and convenient to pick up bolts and nuts to prevent them from slipping off at will. Specification: Item Type: Bolt Nut Thread Checker Material: Aluminum Alloy Metric Thread: 4mm x 0.7, 5mm x 0.8, 6mm x 1.0, 7mm x 1.0, 8mm x 1.0, 8mm x 1.25, 10mm x 1.0, 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 2.0 American Thread: 6-32 Coarse, 8-32 Coarse, 10-24 Coarse, 10-32 Fine, 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. Package List: 1 x Nut Bolt Thread Identifier2 x Gloves Note: Be sure to wear work gloves during the comparison to protect your hands and avoid accidental injury.