JBO Thread Plug Gauge - UNF Go-No/Go - Left Hand - 2B - 1/4 x 28 End Mill Holders Through‑coolant carbide reamer: Directs coolant

Through‑coolant carbide reamer: Directs coolant through the tool to the cutting edge

The AcuRea coating combines a hard surface with multiple nano chrome layers to reduce wear and extend tool life

this end mill delivers efficient material removal and smooth

Flute Count: 2-flute design for fast material removal and clean edges

This slitting saw is engineered to deliver clean

JBO Thread Plug Gauge - UNF Go-No/Go - Left Hand - 2B - 1/4 x 28 End Mill Holders Through‑coolant carbide reamer: Directs coolantThe JBO Thread Plug Gauge is a precision tool designed to quickly verify UNF threads, specifically the left hand variant of 1 4 x 28, with a 2B tolerance. Its ideal for inspectors, machinists, and quality teams across manufacturing, automotive, and aerospace environments, helping you confirm threaded holes meet universal standards and are ready for use in critical assemblies. Go No Go quick checks: The simple go no go design lets you instantly