Performance Tool W129C Thickness Gauge 15 Blades
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- 9 thickness blades 2" long and 6 flat 1" long spark plug blades.
- Decimal and metric sizes.
- 2" steel rule.
- Electrode adjuster.
- Straight Blade SAE Sizes: .002, .003, .004, .006, .008, .010, .015, .017, .018, .019, .020 and .025"
- Straight Blade Metric Sizes: .05, .08, .10, .15, .20, .25, .38, .432, .457, .483, .50 and .63 mm
- Flat Blade SAE Sizes: .020, .025, .028, .030, .035 and .040"
- Flat Blade Metric Sizes: .50, .64, .70, .75, .88 and 1.02 mm