JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M30 x 1 NCDC Drill Chuck reducing clogging and enabling steady

reducing clogging and enabling steady cutting in soft metals like aluminium and non-ferrous alloys

making it ideal for precision corners

and ball-nose geometry gives you confidence in repeatable performance

and hobbyists who need predictable bore sizes with clean edges in tight tolerances

Its left-hand spiral flute paired with right-hand cutting delivers controlled material removal and a clean bore finish

JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M30 x 1 NCDC Drill Chuck reducing clogging and enabling steadyThe JBO Thread Ring Gauge (NoGo) is a precision inspection tool for external metric threads. It helps engineers, machinists, quality control teams, and shop floor technicians quickly verify that threaded components meet the required standards. Designed for metric fine threads, it's tuned for M30 x 1 left hand threads. Constructed from hardened steel, it offers durability and wear resistance for busy workshops and demanding environments, ensuring