"DESCRIPTION Features: Quickly identify 14 metric and 14 UN size nuts & bolts on one easy to use thread gauge. On the left hand side are female threaded holes and male threaded studs to identify common metric threads from M4x0.7 to M14x2.0 On the right hand side are female threaded holes and male threaded studs to identify common inch threads from 6G-32 to 1/2-20 Side rulers in metric and inch for measuring bolt length. Constructed from heavy gauge anodised aluminium the Bordo Nut & Bolt Thread Gauge can be easily wall mounted at POS, repair facility, machine shop are workshop. Metric: M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x1.25, M10x1.0, M10x1.25, M10x1.5, M12x1.25, M12x1.5, M12x1.75, M14x1.5, M14x2.0 Inch: 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 Inclusions: 1 x Special Order - Bordo Thread Tester 28 Sizes Nut and Bolt - 3020-TT REVIEWS"