Contains 1 of each thickness: 0.001″, 0.0015″, 0.002″, 0.003″, 0.004″, 0.005″, 0.006″, 0.007″, 0.008″, 0.009″, 0.010″, 0.012″, 0.014″, 0.015″, 0.016″, 0.018″, 0.020″, 0.022″, 0.024″, and 0.025″. Made from 1/2″ wide C1095 close grain, high carbon spring steel. Packaged in a sturdy, vinyl case with individual blade pockets that conveniently folds flat. Each blade is clearly etched with thickness in metric and decimal. Ends are rounded and edges are smooth for safety. Precision Brand Feeler Gage is used in manufacturing and maintenance operations wherever setting close spacing or checking extremely tight tolerances is required.