JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M27 x 1 Milling Cutter Arbors right-hand cutting: designed for efficient

right-hand cutting: designed for efficient chip evacuation and stable cutting

it delivers precise control and the reach needed for tight cavities

supporting quick setup and stable guidance through the bore

The robust HSS construction paired with a taper-shank design provides reliable performance across demanding machining tasks

JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M27 x 1 Milling Cutter Arbors right-hand cutting: designed for efficientThe JBO Thread Ring Gauge (GO) is a precision tool for quick, reliable verification of external thread diameters on fasteners and threaded components. Sized for metric fine threads, it helps inspectors and machinists confirm that M27 x 1 threads meet the required tolerance and fit. Built as a left hand GO gauge with 6g tolerance, it supports accurate go no go inspections across quality control, manufacturing, and maintenance environments. Precise