【Nut & Bolt Thread Checker】 These thread gauges includes 26 male/female gauges - 14 inch & 12 metric.Thread sizes are permanently carved on each gauge with distinct mark, which makes the mark easy for you to tell.
【Efficiency Improving】Big Time Saver No more bent over the container looking for a nut/bolt to finish your project, especially the nut or bolt that cannot be removed, Each size has a nut and bolt checker on the same gauge, Excellent item for the mechanic Every workshop should have one.
【High Quality Material】 These nut & bolt thread checkers are made of strong material. Inch gauges are clear zinc plated, metric gauges are black oxide.
【Black Oxide 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.
【Zinc Plated 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.

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