Trilock Gage, Go/NoGo, 2B, 1 7/8-12
-12, Thread Type UNC, Tolerance Class X, Gauge Finish Chrome Plated, Gauge Length - Go Member 1 1/4 in, Gauge Length - No-Go Member 7/8 in, Gauge Material Tool Steel, Handle Color Blue, Handle Length 5 in, Hardness RC 70-72, Included Certification Certificate of Accuracy with NIST Traceability.Threaded Plug Gauge Assembly, Dimension Type Inch, Gauge Type Go/No-Go (Plus/Minus), Handle Design Double End, Included Handle Trilock 5-1/2, Thread Class 2B, Thread Size 1-7/8 In.