JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M40 x 2 RPTECH this reamer helps you finish

this reamer helps you finish holes accurately in common metals

Its stub-length design reduces deflection in the active cutting zone

The combination of two flutes and a tapered neck minimizes vibration

and controlled corner radii supports faster setups

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M40 x 2 RPTECH this reamer helps you finishThe JBO Thread Plug Gauge is a precision tool designed to check internal metric fine threads, specifically for M40 x 2 holes. Its ideal for machinists, engineers, quality inspectors, and assembly teams who need fast, reliable verification of threaded holes. With a Go No Go design and hardened steel construction, you can count on quick, repeatable checks that help reduce downtime and ensure components thread together smoothly and accurately. Fast Go No