General description This 26Pcs Nut and Bolt - Thread Gauge set is an upgraded thread checking solution designed for easy and efficient measurement of screws and nuts. Each gauge is securely placed in well-cut foam, preventing movement while allowing for easy removal. This set eliminates the need to carry multiple gauges, making it easier to reach tight spots and check sizes quickly. Technical specifications Includes 26 gauges: 14 for inch sizes and 12 for metric sizes Inch sizes: 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 sizes: M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x1.25, M10x1.0, M10x1.25, M10x1.5, M12x1.25, M12x1.5, M12x1.75 Material: aluminum alloy Color: black and silver Measurement allowed error: +/- 1-3cm Usage To use the thread gauge, simply screw the nut or bolt into the appropriate gauge. This process takes only a few seconds, allowing for quick size checks without the hassle of multiple tools.