Koolance (patent-pending) quick disconnect no-spill coupling with automatic shutoff. 10mm (3/8″) ID female straight connection with compression fitting. It will only fit a Koolance QD3 male quick disconnect.
After pulling the ring on the female QDC side, the quick-disconnect fittings will separate. Liquid on both sides will be automatically obstructed with approximately 0.2mL freed. Fittings are chrome-plated brass.