JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M40 x 1 Face Mill Arbors This reamer is engineered to

This reamer is engineered to deliver precise diameters with smooth bore finishes

77 mm and tuned to ISO H5 tolerance

and coatings lets you tailor the tool to your material and depth requirements

reliable finishing in hard steels

making it suitable for professional shops

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M40 x 1 Face Mill Arbors This reamer is engineered toThe JBO Thread Ring Gauge (NoGo) Metric Fine Right Hand 6g M40 x 1 is a precision inspection tool designed to verify external metric fine threads. Its ideal for engineers, machinists, quality inspectors, and maintenance teams who need fast, reliable checks of threaded components. With its NoGo design, it helps you verify whether a thread is within tolerance, preventing mismatches before assembly. Built for durability and long life, the gauge supports