Sealey AK70NBC Thread Checker Nut & Bolt Checker - Metric/Imperial

26-Piece thread checker. Easily identify nut and bolt sizes in imperial (14 piece) or metric (12 piece). Thread checkers on a wire lanyard for quick and precise measuring. White beads between gauges to indicate the metric sizes and blue to indicate imperial. Convenient loops on each end for hanging. Imperial Sizes UNC/UNF: 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: M4-0.7, M5-0.8, M6-1.0, M7-1.0, M8-1.0, M8-1.25, M10-1.0, M10-1.25, M10-1.5, M12-1.25, M12-1.5, M12-1.75.