[Safe Material]: Water dispenser valve made of PP, you can use it with confidence. [Reusable & Multiple Uses]: Using instead of smaller bottles helps save money and reduces waste for recycling. Perfect for office, school, camping, sport events, etc. [Size and Applicable]: Fits 55mm Crown Top Non-Threaded Water containers only. Not compatible with 48mm screw type lids. Suitable for 1-5 gallon water containers. [Easy to Use and Anti-Dust Cap]: Features a dust-proof cap to prevent contamination and keep drinking water clean. Easy to installsimply press into the bucket opening and rotate clockwise until securely fixed. Color: White Material: PP Size: 9x10cm Package Contents: 2 x Water Dispenser Valve Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3cm.