Threaded Ring Gauge, Long Form Calibration Certificate No, Material Tool Steel, Dimension Type Metric, Gauge Type Go/No-Go (Plus/Minus), Pitch Diameter 1.354 mm (Go), 1.291 mm (No-Go), Pitch Diameter - Go Member 1.354 mm, Pitch Diameter - No-Go Member 1.291 mm, Thread Class 6G, Thread Length 2.4 mm, Thread Size M1.6 x 0.35, Thread Type Metric, Compatible Holder Size 1T, Finish Uncoated, Gauge Design Adjustable, Hardness RC 60-62