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Its two-flute design and square edge deliver accurate
dependable bore sizes across parts
it minimizes tool misalignment
enabling quick setup and repeatable results on a wide range of machines
making it suitable for both professional shops and serious hobbyist work
JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M6 x 0.75 Boring Bar Blank Its two-flute design and squareThe JBO Thread Ring Gauge (NoGo) Metric Fine Left Hand 6g M6 x 0. 75 is a precision measurement tool designed to verify external thread diameters on left handed fasteners and components. It helps quality teams, machinists, and inspectors confirm parts meet exact size standards and prevent undersized threads from progressing through assembly. Crafted from hardened steel, this gauge delivers durable, long lasting performance in busy workshops and
