JBO Thread Plug Gauge - UNC Go-No/Go - Left Hand - 2B - 1/2 x 13 Tapping Chucks allowing you to tailor tool

allowing you to tailor tool reach and engagement to your specific machining needs

and durable construction helps you reduce setup time

Ideal for finishing existing holes or bringing a bore to a precise 4

enabling repeatable results across parts

controlled reaming action across the full length of the tool

JBO Thread Plug Gauge - UNC Go-No/Go - Left Hand - 2B - 1/2 x 13 Tapping Chucks allowing you to tailor toolThe JBO Thread Plug Gauge is a precision Go No Go gauge designed to quickly and reliably inspect left hand UNC threads. Sized for 1 2 x 13 with a 2B tolerance, it helps verify threaded holes meet Unified thread standards in demanding industries like manufacturing, automotive, and aerospace. Its dual ended design makes GO and NO GO checks fast and straightforward, reducing guesswork during quality control. Go No Go quick checks: Instantly identify