JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 4h - M18 x 1 S&E it employs variable index geometry

it employs variable index geometry to reduce cutting forces and improve chip evacuation

you gain a dependable tool that consistently produces accurate holes

Its robust construction and precise finish help you achieve consistent results

designed for through-hole reaming with precision and reliability

Coating and advanced substrate for hardened materials: ALTiN+HH coating plus a specially developed carbide substrate deliver long tool life and consistent performance on materials up to HRc70

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 4h - M18 x 1 S&E it employs variable index geometryThe JBO Thread Ring Gauge (GO) for Metric Fine threads is a precision tool designed to verify external thread diameters. Built for engineers, machinists, inspectors, and shop floor teams, it delivers quick, reliable Go dimension checks for M18 x 1 threads in demanding environments, with durability built to withstand daily use in quality control and precision work. Hardened steel construction: Built from hardened steel for exceptional wear resistance,