Comprehensive Thread Gauge Set. This 70-piece thread gauge kit is designed for quick and easy identification of screw sizes, featuring. 37 Standard Sizes and 33 Metric Sizes for versatile use. Exclusive Upgraded 70-Piece Set : Includes rare thread sizes that are hard to find, enhancing your toolkit. Specialized M11 Metric Sizes : Features M11x1.25 and M11x1.5 gauges, essential for automotive mechanics. User-Friendly Design : Comes with a smooth black box and foam storage rack for effortless access and organization. Three Reading Methods : Sizes can be read through engraved markings, easy-to-read stickers on the foam, and color coding (blue for standard sizes, red for metric). High-Quality Material : Made from premium aluminum with clear, lasting laser-etched markings for reliable measurements. Standard Sizes (Shown in Blue). Includes sizes such as. 2-56 UNC, 2-64 UNC, 3-48 UNC, 3-56 UNC. 4-40 UNC, 4-48 UNC, 5-40 UNC, 6-32 UNC. 8-32 UNC, 10-24 UNC, 12-24 UNC, 1/4-20 UNC. And many more up to 1-12 UNC! Metric Sizes (Shown in Red). M2X0.4 Coarse, M3x0.5 Coarse, M4x0.7 Coarse. M8x1.0 Fine, M10x1.25 Fine, M12x1.5 Fine. M20-1.5 Fine, M24-2.