Various kinds! 1.material:GCr15 (Bearing steel) 2.Thread plug gauge+Thread ring gauge 3.High precise 4.Calibration Certifie

1. thread plug gauge & thread ring gauge

2.GCr15 material

3.calibration certified

4.various kinds of gauges: Metric ISO / UN(American standard) / Taper Pipe / Pipe Thread gauge sealed without thread / Sealed with thread / Taper shank Cylindrical plug gauge / Smooth Pin gauge

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