JBO Thread Plug Gauge (GO) - Metric Fine - Right Hand - 6H - M68 x 4 RPTECH it uses left-hand spiral flute

it uses left-hand spiral flute with right-hand cutting to produce accurate holes in a range of metals

This straight‑shank hand reamer uses HSS (M2) with a left‑hand spiral flute and right‑hand cutting

reduces inspection and rework

delivering consistent bore quality and better straightness in deep or through-holes

helping your projects move from roughing to finishing with confidence

JBO Thread Plug Gauge (GO) - Metric Fine - Right Hand - 6H - M68 x 4 RPTECH it uses left-hand spiral fluteJBO Thread Plug Gauge (GO) for Metric Fine provides a precise, quick way to verify threaded holes meet the M68 x 4 metric fine standard. Designed for right hand threads and 6H tolerance, its ideal for engineers, machinists, quality inspectors, and maintenance technicians who need reliable hole verification on the shop floor or in the QC lab. Durable hardened steel construction: Built to withstand daily use, the gauge resists wear and maintains its