JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6h - M20 x 1.5 FLH and its left‑hand spiral flute

and its left‑hand spiral flute with right‑hand cutting delivers predictable hole geometry and smooth reaming performance

Left-hand spiral flute with right-hand cutting: Enables efficient chip evacuation and stable cutting action for clean finishes

3 Balanced for Stability: Precise balancing minimizes vibration

Its straight shank ensures broad compatibility with standard tooling setups

Left-hand spiral flute with right-hand cutting: Optimized geometry delivers smooth hole finishing and minimizes chatter across common metals

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6h - M20 x 1.5 FLH and its left‑hand spiral fluteThe JBO Thread Ring Gauge (NoGo) Metric Fine, Right Hand, 6h, M20 x 1. 5 is a precision inspection tool designed to quickly and reliably verify external thread diameters. Ideal for engineers, machinists, quality control professionals, and workshop technicians, it helps you confirm that parts meet exact thread specifications with a simple pass fail check. Built for demanding environments, this NoGo gauge supports efficient quality control without