JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M56 x 1 A&NF Wide clamping range (3–20 mm)

Wide clamping range (3–20 mm) for round-shank tooling: Offers versatile compatibility with a broad range of tools

straight holes with smooth surface finish

and maintained accuracy over thousands of insertions

Built for CNC and manual milling

This reamer improves hole quality by minimizing chatter and ensuring repeatable results across jobs

JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M56 x 1 A&NF Wide clamping range (3–20 mm)The JBO Thread Ring Gauge (GO) Metric Fine, Left Hand, 6g, M56 x 1 is a precision Go gauge designed to verify external thread diameters quickly and reliably. Its ideal for machinists, inspectors, and quality teams who need fast, confident pass fail decisions on threaded components. Crafted from hardened steel with a metric fine thread specification, this gauge delivers durable, long lasting performance in busy workshops and demanding environments. The