JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M140 x 2 S&E 5 LH threads

5 LH threads

The 20 mm nominal diameter features a left-hand spiral flute and right-hand cutting

accurate hole dimensions every time

this reamer helps you speed setup

98 mm nominal diameter M2 high-speed steel taper-shank tool designed for stable

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M140 x 2 S&E 5 LH threadsThe JBO Thread Ring Gauge (NoGo) Metric Fine, Right Hand, 6g, M140 x 2 is a precision tool designed to verify external thread diameters quickly and reliably. Built for engineers, inspectors, machinists, and maintenance teams, it helps you confirm whether a threaded component meets size limits with clear, decisive results. Crafted from hardened steel, this gauge delivers exceptional durability and wear resistance for daily use in demanding shop