JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6h - M58 x 1 M&D With a Type E2 design

With a Type E2 design

while the left-hand flute and right-hand cut geometry deliver efficient chip control for faster cycles and reliable bore quality

this reamer helps finish holes to precise dimensions with a smooth surface finish

With robust M2 HSS construction and a precise ISO H5 tolerance

consistent results across materials

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6h - M58 x 1 M&D With a Type E2 designThe JBO Thread Ring Gauge (NoGo) Metric Fine is a precision tool that makes quick, confident checks of external thread diameters. Its designed for engineers, machinists, inspectors, and technicians who need reliable go no go verification for metric fine threads. Crafted from hardened steel for durability and wear resistance, this gauge withstands daily use in busy workshops and production lines while delivering repeatable results and easy