JBO Thread Ring Gauge (GO) - UNC - Right Hand - 2A - 1 1/2 x 6 Hex Key Drill Chuck Left-hand spiral flute and right-hand

Left-hand spiral flute and right-hand cutting: Delivers predictable cutting action and effective chip control for clean

compact knurled design: Easy to grip and maneuver in tight holes

Short shank for stability in tight spaces: More rigidity in restricted-clearance setups and deep cavities

77 mm nominal cutting size for exact hole enlargement and final finishing

repeatable clamping of small parts with minimal setup effort

JBO Thread Ring Gauge (GO) - UNC - Right Hand - 2A - 1 1/2 x 6 Hex Key Drill Chuck Left-hand spiral flute and right-handThe JBO Thread Ring Gauge (GO) UNC Right Hand 2A 1 1 2 x 6 is a precision tool designed to verify external threads on fasteners, fittings, and machined components. Built for engineers, machinists, quality teams, and maintenance staff, it delivers quick, reliable checks to confirm parts meet UNC standards. Designed for durability and accuracy in busy workshops, this GO ring gauge helps you quickly determine whether a parts external thread diameter