Threaded Plug Gauge Assembly Dimension Type Metric Gauge Type Go/No-Go (Plus/Minus) Handle Design Double End Included Handle Taperlock 2 Thread Class 6H Thread Size M12 x 1.00 Thread Type Metric Tolerance Class X Gauge Finish Chrome Plated Gauge Length - Go Member 19.00 mm Gauge Length - No-Go Member 9.50 mm Gauge Material Tool Steel Handle Color Yellow Handle Length 3 in Hardness RC 70-72 Included Certification Certificate of Accuracy with NIST Traceability