22-Blade go no-go gauge set with 45 Degree tips

They are used to verify critical gapping in various situations, as is the case with breaker points, spark plug gapping, pistons, piston rings, valve lids in automobiles, trucks, tractors, farm machinery, motocycles, and industrial machinery. 22 standard blades 3" long x 1/2" width. The sizes included are: 0.004 - 0.006, 0.005 - 0.007, 0.006 - 0.008, 0.007 - 0.009, 0.008 - 0.010, 0.009 - 0.011, 0.010 - 0.012, 0.011 - 0.013, 0.012 - 0.014, 0.013 - 0.015, 0.014 - 0.016, 0.015 - 0.017, 0.016 - 0.018, 0.017 - 0.019, 0.018 - 0.020, 0.019 - 0.021, 0.020 - 0.022, 0.021 - 0.023, 0.022 - 0.024, 0.023 - 0.025, 0.024 - 0.026, 0.025 - 0.027.