JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M12 x 0.75 Hex Key Drill Chuck The JBO Thread Ring Gauge

The JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M23 x 0

and a sturdy BT40 interface translates to improved cutting performance

77 mm diameter is an intermediate precision reamer designed for finishing small-diameter holes with consistent results

Secure taper shank design: Fits standard tool holders for stable alignment and reduced runout during reaming

closely controlled holes that fit cleanly in assemblies

JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M12 x 0.75 Hex Key Drill Chuck The JBO Thread Ring GaugeThe JBO Thread Ring Gauge (NoGo) Metric Fine Left Hand 6g M12 x 0. 75 is a precision inspection tool designed to verify external thread diameters quickly and reliably. Built for engineers, machinists, quality teams, and assembly professionals, it helps confirm that threaded components meet the M12 x 0. 75 metric fine standard. The NoGo designation supports fast pass fail assessments, reducing guesswork during in process checks and final inspections.