The JBO Thread Ring Gauge (GO) – Metric Coarse, Left Hand, M11 x 1.5 is a precision go gauge used to verify external threads on metric coarse fasteners and components. Its rugged knurled exterior provides a secure grip in busy workshops, while the inner threading aligns with standard M11 x 1.5 left-hand specifications for quick, reliable measurements.

• Exact M11 x 1.5 LH Go Gauge: Quickly verify external threads meet the precise size and pitch for metric coarse connections, reducing guesswork and rework.
• Hardened Steel for Long-Lasting Durability: Built to resist wear from daily use in inspections and assembly, maintaining accuracy over time.
• Ergonomic, Left-Hand Thread Design: Specifically shaped for easy placement on left-hand threads, enabling fast, clear pass/fail checks with minimal handling.

Used in quality control and precision engineering workflows, this GO gauge helps you confirm correct thread engagement before assembly, speeding inspections, lowering downtime, and supporting consistent, repeatable results across batches.