JBO Thread Ring Gauge (GO) - UNC - Right Hand - 2A - No. 12 x 24 Hydraulic Expansion Chucks Stub-length carbide design for rigidity:

Stub-length carbide design for rigidity: the compact stub form and carbide construction provide added stiffness in tight holes

repeatable hole sizes with the Toolex Reamer — a taper-shank

giving you flexible use across different machines and setups

giving you confidence in repeatable performance across jobs

precise bore sizing in metalworking

JBO Thread Ring Gauge (GO) - UNC - Right Hand - 2A - No. 12 x 24 Hydraulic Expansion Chucks Stub-length carbide design for rigidity:The JBO Thread Ring Gauge (GO) UNC Right Hand 2A No. 12 x 24 is a precision Go gauge designed to quickly verify external thread diameters. It is ideal for engineers, buyers, tradespeople, hobbyists, and quality teams who need reliable, repeatable checks to confirm components conform to Unified UNC thread standards. Crafted from hardened steel, this ring gauge delivers durability and long lasting performance in demanding workshops, production lines,