JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M138 x 2 Face Mill Arbors - Anti-Vibration Its robust material and refined

Its robust material and refined geometry translate into consistent performance across jobs

a K10 carbide tip for extended life

6H compatibility: Specifically matched to left‑hand threads within the M42 x 1

The long neck provides extended reach for intricate mold and die features

reducing runout and delivering repeatable bore finishes in every cycle

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M138 x 2 Face Mill Arbors - Anti-Vibration Its robust material and refinedThe JBO Thread Ring Gauge (NoGo) Metric Fine, Right Hand, 6g, M138 x 2 is a precision tool designed to verify external thread diameters on fasteners, fittings, and machined components. Ideal for engineers, inspectors, machinists, and quality teams, it helps you quickly confirm whether parts meet the required thread size before assembly or repair. Made from hardened steel for durability and wear resistance, this NoGo gauge delivers reliable, long