JBO Thread Ring Gauge (GO) - BSF - Right Hand - Medium Class - 7/8 x 11 Face Mill Arbors - Through Coolant the GSK collet system is

the GSK collet system is a trusted choice for demanding operations where repeatable performance matters

HSS-E (M35 cobalt) with straight shank: tuned for durability and wear resistance in demanding metals

allowing reliable performance on hardened materials up to HRc70 without frequent tool changes

efficient cut

ISO H5 tolerance on M2 HSS (BS 328/4): Delivers repeatable hole sizes within -0 +0

JBO Thread Ring Gauge (GO) - BSF - Right Hand - Medium Class - 7/8 x 11 Face Mill Arbors - Through Coolant the GSK collet system isThe JBO Thread Ring Gauge (GO) BSF is a precision go gauge designed to verify external BSF threads. It is sized for 7 8 x 11 right hand threads and is ideal for machinists, inspectors, and quality teams working in manufacturing, maintenance, and assembly environments. Manufactured from hardened steel for lasting durability, the gauge features a knurled outer edge for a secure grip in busy shops. The GO gauge provides clear, quick pass fail results to