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