JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M20 x 1 S&E Durable hardened steel construction: Resists

Durable hardened steel construction: Resists wear and maintains accuracy in busy shops

With its robust construction and straightforward setup

Repeatable Fit: The tapered shank seats firmly in standard tool holders

accurate reaming combined with efficient chip evacuation

you can achieve repeatable fits and cleaner finishes

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M20 x 1 S&E Durable hardened steel construction: ResistsThe JBO Thread Ring Gauge (NoGo) Metric Fine Right Hand 6g M20 x 1 is a precision measuring tool designed to verify external thread diameters. Its ideal for engineers, machinists, quality teams, tradespeople, and hobbyists who need reliable, standards aligned thread checks without guesswork. Crafted from hardened steel for strength and wear resistance, this NoGo gauge delivers dependable performance in demanding environments. Its simple, intuitive