JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M12 x 1.25 FMH and secure mounting makes it

and secure mounting makes it a reliable choice for demanding fabrication

built from HSS‑E (M35 cobalt) for intermediate precision

Left-Hand Spiral Flute for Efficient Chip Removal: The left-hand spiral flute works with right-hand cutting to improve chip evacuation and deliver a smoother finish

The combination of a stub length and straight shank supports stable alignment in fixtures and standard tooling setups

The combination of M2 HSS and the DIN 206-B specification ensures compatibility with standard hand reaming practices while delivering durable performance in routine workshop use

JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M12 x 1.25 FMH and secure mounting makes itThe JBO Thread Ring Gauge (NoGo) Metric Fine, Left Hand, 6g, M12 x 1. 25 is a precision tool designed for accurate measurement of external threads. Ideal for engineers, machinists, quality inspectors, and workshops, it provides quick, reliable checks to verify that M12 x 1. 25 left handed threads meet the required limits and identify non conforming parts at a glance. Crafted from hardened steel, this ring gauge delivers outstanding durability and wear