it delivers reliable performance across repetitive production runs
50 mm nominal bore for precise hole enlargement and finishing
The collet achieves standard precision with run-out under 10 microns
Length: Short length enhances rigidity and stability during machining
helping maintain consistent cutting performance and a clean work surface
JBO Thread Ring Gauge (GO) - Metric Coarse - Right Hand - 4h - M1.8 x 0.35 Boring Bar Blank it delivers reliable performance acrossThe JBO Thread Ring Gauge (GO) Metric Coarse, Right Hand, 4h, M1. 8 x 0. 35 is a precision inspection tool designed to verify external metric coarse threads. Its ideal for engineers, quality inspectors, machinists, buyers, and hobbyists who need quick, reliable checks to confirm parts will fit the mating thread and meet specifications. Hardened steel construction for long life: Built to withstand frequent use in busy workshops, resisting wear and