Pipe Threaded Setting Plug Gauge Dimension Type Inch Gauge Type Go/No-Go (Plus/Minus) Handle Design Double End Included Handle Taperlock Thread Class 2A Thread Size 1/4 In.-18 Thread Type NPSM Tolerance Class X Gauge Finish Uncoated Gauge Material Tool Steel Handle Color Blue Handle Material Aluminum Hardness RC 60-62 Included Certification Certificate of Accuracy with NIST Traceability Pitch Diameter - Go Member 0.4903 in Pitch Diameter - No-Go Member 0.4859 in