JBO Thread Ring Gauge (NoGo) - Metric Coarse - Left Hand - 6g - M8 x 1.25 ER Collet Chucks with sizes chosen to fit

with sizes chosen to fit common setups

it delivers consistent performance at speeds up to 20

clean cuts with dependable edge strength across graphite components

Left-hand spiral flute with right-hand cutting: Provides stable cutting action and efficient chip evacuation for a clean bore

spiral-flute tool crafted in HSS-E cobalt

JBO Thread Ring Gauge (NoGo) - Metric Coarse - Left Hand - 6g - M8 x 1.25 ER Collet Chucks with sizes chosen to fitThe JBO NoGo Ring Gauge Metric Coarse, Left Hand, M8 x 1. 25 (6g) is a precision inspection tool designed to verify external thread diameters on components. Its ideal for engineers, machinists, quality teams, and workshop staff who need fast, reliable checks that parts meet exact thread standards. Made from hardened steel, this gauge delivers long lasting durability in demanding shop environments. The ring design supports quick, non destructive