JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M19 x 0.75 Tapping Chucks 515 mm diameter combines a

515 mm diameter combines a straight shank with a spiral flute to deliver precise hole enlargement and finishing

Notch-free tapered neck for durability: The neck is shaped without a notch to minimize stress points

7 mm diameter and a 10 mm length of cut

The combination of precise sizing and tough construction translates to reliable performance and lower lifecycle costs

Taper Shank for Secure Mounting: Provides reliable seating in compatible holders for stable alignment and repeatable finishes

JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M19 x 0.75 Tapping Chucks 515 mm diameter combines aJBO Thread Ring Gauge (GO) Metric Fine Left Hand 6g M19 x 0. 75 is a precision tool used to verify external metric threads with high accuracy. Designed for machinists, inspectors, and maintenance teams, it enables fast, reliable conformance checks for left handed thread components. A knurled outer edge provides a secure grip in busy workshops, and a smooth inspection face helps with quick, repeatable testing. Precise Go gauge for metric fine left hand