quick-change ER16 collet system for M3–M12 tools: Change collets quickly to match different tapping sizes without lengthy downtime
Fine-tuned for precise hole finishing
Product highlights include a left-hand spiral flute paired with right-hand cutting
Designed for mold and die applications on materials below 55 HRc
With the wear-resistant HSS-E composition
JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6G - M11 x 1 Morse Taper Adaptor quick-change ER16 collet system forThe JBO Thread Plug Gauge is a purpose built tool for metric fine threads. Specifically designed for M11 x 1 holes, this left hand, 6G Go No Go gauge provides fast, reliable checks that help ensure components thread cleanly and fit together every time. Engineers, machinists, inspectors, and mechanics rely on its simple, repeatable action to verify hole tolerance without guesswork, reducing downtime and rework in production or maintenance environments.