1.Gauges:Plug gauge 2.Material:GCr15 3.Type:Various types (Metric,UNC,UNF,BSW) 4.Precision:5H,6G,7H Metric Plug gaugeFeatures: 1.Gauges:Metric thread plug gauge2.Material:GCr153.Type:Various types (Metric,UNC,UNF,BSW)4.Precision:5H,6G,7H 5.Measuring hole sizes and depths6.Checking distances between holes7.Size:Standard or as require If you have any question ,please feel free to contact with us.