This bundle includes the male and female QDC Quick Disconnect No-Spill Coupling for 10mm (3/8in) ID, 13mm OD tubing to G1/4" Koolance patented quick disconnect no-spill coupling with automatic shutoff. 10mm (3/8in) 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. Coolant volume lost upon disconnection will rise with internal pressure higher than 0.5kgf/cm2 (7psi). General Weight: 0.21 lb (0.10 kg) Max No-Spill Pressure: 0.5kgf/cm2 (7psi) Max Pressure Tolerance at 25C: 8kgf/cm2 (113.8psi) Max Temperature Tolerance: 80C (176F) Min Pressure Tolerance at 25C: -1.0kgf/cm2 (-14psi) Min Storage Temperature (*No Freezing): -20C (-4F) Seal Material: EPDM (Water/Glycol Liquids) Wetted Materials: Brass, Stainless Steel, EPDM Koolance patented quick disconnect no-spill coupling with automatic shutoff. G 1/4 BSPP (parallel) thread male fitting for screwing directly into a water block or other component. It will only fit a Koolance QD3 female quick disconnect. General Weight: 0.11 lb Fitting Thread: G 1/4 BSPP Max No-Spill Pressure: 0.5kgf/cm2 (7psi) Max Pressure Tolerance at 25C: 8kgf/cm2 (113.8psi) Max Temperature Tolerance: 80C (176F) Min Pressure Tolerance at 25C: -1.0kgf/cm2 (-14psi) Min Storage Temperature (*No Freezing): -20C (-4F) Seal Material: EPDM (Water/Glycol Liquids) Wetted Materials: Brass, Stainless Steel, EPDM Model: TR-91492-91513