1.Accurate Tool- Our convenient nut and bolt gauge is an accurate tool that allows you to quickly and easily check the size of nuts and bolts, while the permanent mark on each gauge ensures accuracy, so that your measurements are perfect! 2.Save Time & Money- With 26 male/female gauges - 14 inch & 12 metric - on a convenient cable loop, you can quickly and easily check to see if the sizes match before buying replacements. Save valuable time and avoid s with specialty tools. 3.Durability- This thread gauge SAE and metric is crafted from strong stainless steel, making it highly durable and able to withstand a variety of conditions. The inch & metric gauges are clear zinc , making them long lasting and easy to read. 4.Convenience- With our useful tool you can quickly check nuts and bolts before buying replacements, and the individual gauges rotate ly on the wire cable for fast thread verification. With a convenient loop for hanging, this tool is the perfect addition to any toolbox!