JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6h - M39 x 2 G With its precise tolerance and

With its precise tolerance and established DIN-like performance

Metric fine-thread compatibility (M4

accurate hole finishes in various materials

delivers precise bore finishing with reliable consistency

while the to-order manufacturing ensures you receive the exact diameter and geometry you need for consistent results across jobs

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6h - M39 x 2 G With its precise tolerance andThe JBO Thread Ring Gauge (GO) Metric Fine Right Hand 6h M39 x 2 is a precision tool designed to verify external thread diameters against the metric fine standard. Its ideal for engineers, machinists, quality control professionals, and workshop technicians who need fast, reliable checks that components meet exact specifications. Crafted from hardened steel, this GO ring gauge delivers exceptional durability and wear resistance in demanding