Pipe Threaded Plug Gauge Dimension Type Inch Gauge Type Go/No-Go (Plus/Minus) Handle Design Double End Included Handle Taperlock 2 Thread Class 2B Thread Size 1/8 In.-27 Thread Type NPSM Tolerance Class X Gauge Finish Uncoated Gauge Material Tool Steel Handle Color Blue Handle Length 3 in Handle Material Aluminum Hardness RC 60-62 Included Certification Certificate of Accuracy with NIST Traceability Pitch Diameter - Go Member 0.3736 in Pitch Diameter - No-Go Member 0.3783 in