Original Thread Checker - Size Gauge Measuring Tool for M10, 20 cm, silver\nProduct Details\n--Publisher: ASCENDTING\n--Publication date: 0\n--ISBN-13: 003-0391127093\n--Dimensions: 20 x 2 x 2 cm\n--Each size has a nut and bolt checker on the same gauge. 26 male/female gauges - 14 inch & 12 metric.\n--Thread sizes are permanently stamped onto each gauge (inch in red, metric in white)\n--Inch gauges are clear zinc plated, metric gauges are black oxide.\n--The individual gauges rotate freely on the wire cable for fast thread verification\n--The Thread Checker is especially well suited for distinguishing between similar inch and metric threads.\n\nProduct description\uFF1AThe Inch & Metric Thread Checker is an accurate and easy-to-use thread identifier for both nuts and bolts.Each individual gauge features a male threaded stud on one end and a female threaded hole on the other. The Thread Checker is especially well suited for distinguishing between similar inch and metric thread5