JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M90 x 4 M&D and its neck lengths come

and its neck lengths come in options to fit different depths and configurations without sacrificing rigidity

This intermediate reamer features a carbide-tipped cutting edge (K10) for lasting sharpness and consistent results

The taper shank allows secure seating in standard collets and tool holders

cast iron and non‑ferrous metals

0015 mm tolerance supports repeatable results in critical assemblies

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M90 x 4 M&D and its neck lengths comeThe JBO Thread Ring Gauge (GO) is a precision tool for fast, reliable verification of external metric threads. Its designed for machine shops, manufacturing QA teams, engineers, and skilled technicians who need quick, trustworthy thread checks without slowing down production. With a metric fine pitch and right hand orientation, this GO gauge confirms conformance to M90 x 4 standards. Crafted from hardened steel, it offers excellent wear resistance and