OEMTOOLS  25023 Combination Tune-Up Feeler Gauge Hardened, tempered steel blades 6 brass blades measure: 0.006 Inch (0.152 mm) to 0.016 Inch (0.406 mm) 12 steel blades measure: 0.010 Inch (0.254 mm) to 0.026 Inch (0.660 mm) 6 wire gauges measure: 0.025 Inch (0.635 mm) to 0.045 Inch (1.143 mm) 1 electrode adjusting tool