Pipe Threaded Plug Gauge, Dimension Type Inch, Gauge Type Go (Plus), Handle Design Member Only, Included Handle Not Applicable, Thread Class 2B, Thread Size 3 In.-8, Thread Type NPSM, Tolerance Class X, Gauge Finish Uncoated, Gauge Material Tool Steel, Handle Length None, Hardness RC 60-62, Included Certification Certificate of Accuracy with NIST Traceability, Long Form Calibration Certificate No, Pitch Diameter – Go Member 3.3885 in, Standards ASME B1.20.1, Thread Direction Right Hand