JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Right Hand - 6H - M1.7 x 0.35 Face Mill Arbors The hollow-ground bore reduces binding

The hollow-ground bore reduces binding and improves chip clearance during high-velocity cuts

A straight shank offers reliable seating in common collets and tool holders

With a carbide-tipped cutting edge (K10) and a taper shank for secure seating

It uses a left-hand spiral flute with right-hand cutting and through coolant delivery to optimize chip evacuation and surface finish in through-hole applications

68mm is an intermediate precision reamer designed for reliable hole finishing

JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Right Hand - 6H - M1.7 x 0.35 Face Mill Arbors The hollow-ground bore reduces bindingThe JBO Thread Plug Gauge is a precision inspection tool tailored for metric coarse threads. Designed for machinists, quality control teams, and maintenance professionals, its Go No Go design provides quick, reliable verification of threaded holes to ensure proper fit and function. The compact, hand friendly gauge is ideal for fast checks in busy workshops, job sites, or a production line. Built for daily use, the gauge features a knurled, easy to