JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M68 x 3 End Mill Holders Notch-free tapered neck on a

Notch-free tapered neck on a 6 mm shank: Enhances durability and rigidity

74 mm size with DIN 8051 B tolerance (D = ISO H5): Exact sizing and tight

Taper shank for secure toolholding: The tapered shank seats securely in compatible toolholders

and machine shops tackling threaded holes in metal and plastics

and the reamer is manufactured to order by Toolex Ltd

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M68 x 3 End Mill Holders Notch-free tapered neck on aThe JBO Thread Ring Gauge (GO) Metric Fine Right Hand 6g M68 x 3 is a precision tool designed to quickly verify external thread diameters. Its ideal for engineers, machinists, inspectors, and workshop teams who need reliable, on the spot confirmation that threaded components meet exact size requirements. Built for demanding environments, this ring gauge uses hardened steel for exceptional durability and wear resistance. Its GO design delivers fast,