Threaded Plug Gauge Assembly, Dimension Type Metric, Gauge Type Go/No-Go (Plus/Minus), Handle Design Double End, Included Handle Taperlock 3, 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 Length - No-Go Member 12.70 mm, Gauge Material Tool Steel, Handle Color Yellow, Handle Length 3 1/4 in, Hardness RC 70-72, Included Certification Certificate of Accuracy with NIST Traceability