JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 4h - M30 x 1 FHH The straight shank simplifies setup

The straight shank simplifies setup and alignment in common chucks and collets

and better overall productivity on both professional shops and DIY projects

delivering consistent finishes on contouring and finishing passes

Its precise tolerance and flute configuration help reduce rework

The left‑hand spiral flute working with right‑hand cutting provides stable cutting action and efficient chip removal

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 4h - M30 x 1 FHH The straight shank simplifies setupThe JBO Thread Ring Gauge GO Metric Fine (Right Hand, 4h, M30 x 1) is a precision inspection tool designed to quickly and reliably verify external thread diameters. Ideal for quality control labs, manufacturing floors, and service shops, this GO gauge helps confirm that threaded components meet exact size and pitch specifications before assembly or installation. Crafted from hardened steel, the GO gauge delivers durable, long lasting performance in