Threaded Plug Gauge, Dimension Type Metric, Gauge Type Go (Plus), Handle Design Member Only, Thread Class 6H, Thread Size M16 x 2.00, Thread Type Metric, Tolerance Class X, Gauge Finish Chrome Plated, Gauge Length - Go Member 22.20 mm, Gauge Material Tool Steel, Hardness RC 70-72, Included Certification Certificate of Accuracy with NIST Traceability, Pitch Diameter - Go Member 14.7 mm, Standards ASME B1.16M, Thread Direction Right Hand