JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 4h - M50 x 1.5 Face Mill Arbors - Through Coolant and right-hand cutting supports smooth

and right-hand cutting supports smooth operation

6 mm cutting length

repeatable cuts for detailed graphite features

Left-Hand thread compatibility: Specifically designed for left-hand threaded holes

wear‑resistant material that maintains precision over many cuts

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 4h - M50 x 1.5 Face Mill Arbors - Through Coolant and right-hand cutting supports smoothThe JBO Thread Ring Gauge (GO) Metric Fine Right Hand 4h M50 x 1. 5 is a precision inspection tool designed to verify external thread diameters on fasteners and threaded components. It helps machinists, inspectors, and engineers quickly confirm that parts match the exact metric fine standard for reliable mating and consistent performance. Manufactured from hardened steel for lasting durability, this GO gauge stands up to daily use in busy workshops.