JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M72 x 2 FLH and optimized flute geometry helps

and optimized flute geometry helps you achieve high-quality bore finishes

Its rugged construction and thoughtful design mean you can rely on it day after day to verify thread readiness

HSS (M2) taper-shank

By combining secure tool retention with targeted coolant delivery

versatile solution that simplifies setup

JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M72 x 2 FLH and optimized flute geometry helpsThe JBO Thread Ring Gauge (NoGo) is a precision inspection tool designed to verify external metric threads. Specifically configured for left hand, fine pitch threads (M72 x 2) with 6g tolerance, it helps machinists, inspectors, and quality teams quickly confirm parts meet spec without guesswork. Durable hardened steel construction: Built to resist wear in busy workshops, ensuring long life and sustained accuracy through countless inspections. Metric