[Detachable Nut & Bolt ]The Inch & Metric design with detachable wire loop in both ends, you can open or off to use anywhere, provides more possibilities for using space. Conveniently assembled onto a wire loop, it's perfect portable solution! [Printing Size]This Nut and Bolt the size marks will be clearer, with anti-rust, anti-wear features provide longer service life, it solve the problem that may need to be rotated to see the size during use, more convenient and faster to use. [ for Inch Size] Includes 14 Inch Size part numbers: 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. [for Metric Size] Includes 12 Metric Sizes part numbers: M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x1.25, M10x1.0, M10x1.25, M10x1.5, M12x1.25, M12x1.5, M12x1.75. This Nut & Bolt each size has a nut and bolt checker on the same gauge 26 male/female gauges - 14 inch & 12 metric. Thread sizes are permanently stamped onto each gauge. The individual gauges rotate freely on the wire cable for fast thread verification. Color: Gold+Black Material: carbon steel Package Contents: 26pcs Nut and Bolt Checker set 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.