Threaded Plug Gauge Assembly, Dimension Type Metric, Gauge Type Go/No-Go (Plus/Minus), Handle Design Double End, Included Handle Taperlock 00, Thread Class 6H, Thread Size M3 x 0.50, Thread Type Metric, Tolerance Class X, Gauge Finish Chrome Plated, Gauge Length - Go Member 5.60 mm, Gauge Length - No-Go Member 4.00 mm, Gauge Material Tool Steel, Handle Color Yellow, Handle Length 1 3/4 in, Hardness RC 70-72, Included Certification Certificate of Accuracy with NIST Traceability