Threaded Plug Gage, Dimension Type Inch, Gauge Type Go (Plus); No-Go (Minus), Handle Design Assembly, Included Handle Taperlock 5, Thread Class 2B, Thread Size 1 7/16 In.-18, Thread Type UNEF, Tolerance Class X, Gauge Finish Chrome Plated, Gauge Length – Go Member 1 in, Gauge Length – No-Go Member 3/4 in, Gauge Material Tool Steel, Handle Color Light Blue, Hardness RC 70/72, Included Certification Certificate of Accuracy, Long Form Calibration Certificate No, Pitch Diameter – Go Member 1.4014 in