JBO Thread Ring Gauge (NoGo) - UNF - Left Hand - 2A - No. 2 x 64 ER Mini Collet Chucks Applications: Precision hole enlarging and

Applications: Precision hole enlarging and finish work — ideal for enlarging pre-drilled holes and attaining tight tolerances

improving chip evacuation and helping extend tool life in demanding milling and drilling applications

while the left-hand flute design supports effective chip evacuation for consistent performance

and improved production repeatability in drilling

Ultra-precise 5 µm run-out: Provides exceptional concentricity for accurate milling and consistent surface finish

JBO Thread Ring Gauge (NoGo) - UNF - Left Hand - 2A - No. 2 x 64 ER Mini Collet Chucks Applications: Precision hole enlarging andJBO 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