JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 4h - M12 x 1.25 Die & Mould Collet Chucks accurately sized holes to ISO

accurately sized holes to ISO H5 tolerances in a variety of materials

Its robust M2 HSS construction and certified tolerances make it suitable for workshop and production use where accuracy and consistency matter

K10 Carbide with H4 tolerance: intermediate-precision carbide and ISO H4 tolerance provide reliable

reducing clogging and heat buildup for steadier performance and longer tool life

and deliver consistent finishes

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 4h - M12 x 1.25 Die & Mould Collet Chucks accurately sized holes to ISOThe JBO Thread Ring Gauge (NoGo) Metric Fine is a precision tool designed to check external threads on M12 x 1. 25, right hand fasteners and components. Ideal for engineers, quality inspectors, machinists, and shop floor technicians, it helps verify that threaded parts meet the 4h tolerance without guesswork. The gauge is crafted from hardened steel, delivering durable, long lasting performance in busy workshops. Its exact geometry and smooth finish