PEEK coupler for connecting a guard and analytical column. Each side has a coned 10-32 threaded stem for easy installation. Swept volume of 7.2 µL for minimal peak dispersion. Recommended for PEEK-body IC columns and any 250mm column installed in the CTO-20A/AC, CTO-40S, or CTO-40C. Thru-hole is 0.022" (0.56mm), maximum pressure 5,000 psi (345 bar)