Truthread Thread Ring Gauge (GO) - UN - Right Hand - 2A - 1.3/8x8 Shrink Fit Holders Hollow design with O-ring seal:

Hollow design with O-ring seal: The hollow core allows coolant to pass through while the O-ring creates a tight seal at the connection

organized tool storage while keeping floors clear

repeatable results in precision-hole finishing

The extended reach helps machinists access deep features with less tool deflection

Truthread Thread Ring Gauge (GO) - UN - Right Hand - 2A - 1.3/8x8 Shrink Fit Holders Hollow design with O-ring seal:Truthread GO Ring Gauges are precision instruments designed to quickly verify the size of cylindrical components. This GO gauge is tailored for Unified National (UN) right hand threads and includes a 2A tolerance class, sized at 1 3 8 in diameter with 8 threads per inch. Crafted from high quality steel, it delivers durable performance in everyday manufacturing, quality control, and maintenance environments. Whether used for setup, incoming inspection,