Thread-Checker-Nut-Bolt-Checker-Imperial-Metric-Sealey-AK70NBC-26-Piece-thread-checker-Easily-identify-nut-and-bolt-sizes-in-imperial-UNC-and-UNF-14-piece-or-metric-12-piece-Thread-checkers-on-a-wire-lanyard-for-quick-and-precise-measuring-White-beads-between-the-gauges-to-indicate-the-metric-sizes-and-blue-to-indicate-imperial-Convenient-loops-on-each-end-for-hanging-Sealey-AK70NBC-Thread-Checker-Nut-Bolt-Checker-Imperial-Metric