JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M70 x 4 Face Mill Arbors it features a left-hand spiral

it features a left-hand spiral flute and right-hand cutting for efficient reaming in DIN 212-B applications

making it a reliable choice for machining workflows that demand tight tolerances and repeatable results

it provides efficient chip control and predictable cutting action

cast iron and non‑ferrous materials

and ISO H4 tolerance: Efficient cooling and accurate sizing for clean finishes and repeatable results

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M70 x 4 Face Mill Arbors it features a left-hand spiralThe JBO Thread Ring Gauge (GO) is a precision tool designed to verify external metric threads with confidence. Specifically tuned for metric fine threads in the M70 x 4 size with a right hand orientation, this GO gauge helps you quickly confirm that components meet exact dimensional standards during inspection. Crafted from hardened steel, it offers excellent wear resistance and durability for demanding shop environments. Its straightforward design