CO2 Valve Tap Specifications: Union: On/Off Finger Hand Valve Usage: Air Model: HVFF-6 Tube Size: 6mm Operating Pressure: 0~145 PSI (0~1.0MPa) Operating Temperature Range: 0~60 C Fit For Tube Material: Polyurethane/Nylon Upgrade your aquarium setup with the CO2 Valve Tap – Order now and experience the difference!