JBO Thread Ring Gauge (NoGo) - UNF - Left Hand - 2A - No. 2 x 64 ER Mini Collet Chucks this collet delivers a run-out

this collet delivers a run-out of just 10 microns

and improved production repeatability in drilling

Exacting fit for VDI holders: Engineered to match E1-sized tooling with tight tolerances

Carbide-tipped (K10) and sized for an intermediate bore

and reliable performance in metalworking tasks

JBO Thread Ring Gauge (NoGo) - UNF - Left Hand - 2A - No. 2 x 64 ER Mini Collet Chucks this collet delivers a run-outJBO Thread Ring Gauge (NoGo) UNF Left Hand 2A No. 2 x 64 is a precision inspection tool designed to verify external thread diameters to Unified thread standards. Its ideal for machinists, quality inspectors, maintenance teams, and assembly engineers who need fast, reliable checks of left hand threads. The NoGo design provides a clear pass fail indication, helping you ensure every threaded part meets the required fit and function before moving to the