JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M39 x 3 Face Mill Arbors while the M2 HSS construction

while the M2 HSS construction stands up to repeated use in common metals

Flute design: Left-hand spiral flute for efficient swarf evacuation and stable guidance

By combining precise contouring

and compatibility with common setups

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M39 x 3 Face Mill Arbors while the M2 HSS constructionThe JBO Thread Ring Gauge (GO) Metric Fine Right Hand 6g M39 x 3 is a precision tool designed to verify external thread diameters and pitches quickly and reliably. Its ideal for engineers, machinists, inspectors, and quality teams who need clear go no go checks to confirm parts meet standard specifications. Made from hardened steel for durability, this GO ring gauge stays accurate through repeated use in busy shops and QC labs. Its right hand