6G Metric thread ring gauge gauges set M28 M28X3 M28X2 M28X1.5 M28X1 GO NOGO T Z Fine screw thread Ring gage gages M28x2.5 M28*1

6G Metric thread ring gauge gauges set M28 M28X3 M28X2 M28X1.5 M28X1 GO NOGO T Z Fine screw thread Ring gage gages M28x2.5 M28*1

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