JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M20 x 1 Die & Mould Collet Chucks Designed for a wide range

Designed for a wide range of users—from engineers and buyers to tradespeople and hobbyists—the tool’s variable index geometry reduces cutting forces and improves surface finish

this 3‑flute ball nose delivers smooth contouring and accurate radii on complex cavities

providing reach and rigidity for deep pockets and complex contours

minimizing downtime and keeping your workflow efficient

Flute arrangement: Left-hand spiral flute with right-hand cutting for efficient swarf removal and smooth bore finishes

JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M20 x 1 Die & Mould Collet Chucks Designed for a wide rangeDesigned for engineers, inspectors, and shop floor teams, the JBO Thread Ring Gauge (NoGo) Metric Fine Left Hand 6g M20 x 1 provides a precise, reliable way to verify external thread diameters to the M20 x 1 fine pitch standard. This left hand gauge is built for quick, on the spot checks, helping you identify non conforming threads and keep production moving with confidence. Go No Go quick checks: Quickly determine whether an external thread meets the