Threaded Plug Gauge Assembly Set, Dimension Type Inch, Gauge Type Go/No-Go (Plus/Minus), Handle Design Double End, Included Handle Taperlock 000, Thread Class 2A, Thread Size #1-72, Thread Type UNF, Tolerance Class X, Gauge Length – Go Member 7/32 in, Gauge Length – No-Go Member 7/32 in, Gauge Material Tool Steel, Handle Color Blue, Handle Length 1 1/2 in, Hardness RC 60-62, Included Certification Certificate of Accuracy with NIST Traceability, Long Form Calibration Certificate No