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QD3 No-Spill Quick Connect Male to 19 / 13mm - BlackKoolance (patent-pending) quick disconnect no-spill coupling with automatic shutoff. 13mm (1/2") ID, 19mm (3/4") OD male straight connection with compression fitting. It will only fit a Koolance QD3 female quick disconnect.
After pulling the ring on the female QDC side, the quick-disconnect no-spill fittings will separate. Liquid on both sides will be automatically obstructed with approximately 0.2mL freed. Fittings are chrome-plated brass.