10pcs Aquarium Air Tube Connectors 4mm Transparent Hose Fittings Fish Tank. Elevate Your Aquarium Setup with Our Premium Aquarium Airline Tubing Connectors, Meticulously Designed for Flawless Connections with 4mm Inner Diameter Air Line Hoses. Made from Superior, Non-toxic Plastic, These Transparent Connectors Prioritize Safety and Dependability. Ideal for Various Uses, Such As Aquariums, Food Processing, Medical Treatment, and Irrigation, They Stand out with Their Durability and Resistance to Acids and Alkalis. Enjoy the Convenience of These Shockproof, Wear-resistant Connectors, Ensuring Long-lasting Performance and Versatility. Features: - Made from High-quality, Environmentally Friendly Plastic - Resistant to Acids and Alkalis for Enduring Durability - Suitable for Diverse Applications Across Different Fields - Comfortable to Handle, Providing a Secure and Easy Connection - Simple, Elegant, and Reusable Design Package Includes: - 10 Turning Joints.