JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6h - M9 x 0.5 Hydraulic Expansion Chucks Bore: 8 mm for compatibility

Bore: 8 mm for compatibility with standard arbors

with predictable lead times

when paired with a 30° helix

2 mm diameter and a long-neck design

The left-hand spiral flute aids chip evacuation in a variety of materials

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6h - M9 x 0.5 Hydraulic Expansion Chucks Bore: 8 mm for compatibilityThe JBO Thread Ring Gauge (GO) Metric Fine, Right Hand, 6h M9 x 0. 5 is a precision tool for confirming external thread diameters. Built for quick Go No Go checks, it helps inspectors and machinists verify parts meet exact thread standards in production, assembly, and maintenance tasks. Crafted from hardened steel, the gauge delivers durable, wear resistant performance in busy workshops. Its simple, robust design makes it easy to use across teams,