QD2 Female Quick Disconnect No-Spill Coupling, Male Threaded G 1/4 BSPP Koolance (patent-pending) quick disconnect no-spill coupling with automatic shutoff. G 1/4 BSPP threaded male fitting for screwing directly into a water block or other component. It will only fit a Koolance QD2 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 nickel-plated brass. Weight 0.08 lb (0.04 kg) Max Pressure @ 25°C 8kgf/cm2 (113.8psi) connected, 5kgf/cm2 (71psi) disconnected Max Temperature 100°C (212°F)