Lang Tools 26 Blade Feeler Gauge 29A For ignition and general purpose measuring Blades measure: 3in. long x 1/2in. wide with thickness Made of tempered 1095 spring steel The sizes, both decimal and metric equivalent, are permanently etched on each bladePART contains twenty-six 3in.x 1/2in. blades with thicknesses:.0015, .002, .0025, .003, .004, .005, .006, .007, .008, .009, .010, .011, .012,.013, .014, .015, .016, .017, .018, .019, .020, .021, .022, .023, .024, .025