Features: 1. High quality material, safe and nontoxic 2. Strong resistance to acid, alkali, salt corrosion ability 3. Under 120℃ environment is normal performance, and has good formability. 4. High adsorption properties, thermal stability, chemical stability, has high mechanical strength, etc. 5. Easy to install, no assembly required. Specifications: Material: Plastic, silicone valve core Diameter: 9.5-10mm Total length: 58mm Opening Pressure: 0.01MPA A back Pressure: 0.7MPA Package included: 1 x Valve Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.