JBO Thread Ring Gauge (GO) - Metric Coarse - Right Hand - 6g - M27 x 3 ER Collet Chucks promoting reliable reaming action and

promoting reliable reaming action and repeatable hole dimensions

Suitable for a wide range of BT40 milling applications—from prototyping to production—the DMC10 is a trusted choice for shops that demand reliability and repeatability

Durable HSS-E (M35 cobalt) construction: Cobalt-enhanced steel provides improved wear resistance and longer tool life in demanding materials

supporting stable cuts in challenging materials

It features a left-hand spiral flute with right-hand cutting and a through-coolant design

JBO Thread Ring Gauge (GO) - Metric Coarse - Right Hand - 6g - M27 x 3 ER Collet Chucks promoting reliable reaming action andThe JBO Thread Ring Gauge (GO) for Metric Coarse threads is a precision inspection tool designed to verify external thread diameters with reliability and ease. Its ideal for engineers, quality control teams, machinists, buyers, and hobbyists who need quick, confident checks to ensure parts meet exact thread specifications. Crafted for right hand metric coarse threads, specifically M27 x 3, this GO gauge delivers consistent measurements that help