Features: 1.Made of plastic material, high strength, high temperature resistance, corrosion resistance and wear resistance. 2.Transparent water pipe joint for easy observation of water flow and easy cleaning. 3.It can be used in many places, such as aquariums, fish tanks, air pumps, etc. 4.Y-type transparent joint, excellent process to ensure good connectivity. 5.A variety of specifications to choose from, so you can find the right one. Specification: Item Type: Water Pipe Joint_x000D_ Product Material: Plastic_x000D_ Product Color: Transparent_x000D_ Product Size: Water Pipe Joint_x000D_ Outer Diameters: Approx. 3.9mm / 0.15in, 4.8mm / 0.19in, 6.4mm / 0.25in, 8mm / 0.31in, 12mm / 0.47in, 15.8mm / 0.62in (Optional)_x000D_ Applicable to:_x000D_ 3.9mm: For silicone tube and hose with an inner diameter of 3-4MM._x000D_ 4.8mm: For silicone tube and hose with an inner diameter of 4-5MM._x000D_ 6.4mm: For silicone tube and hose with an inner diameter of 5-7MM._x000D_ 8mm: For silicone tube and hose with an inner diameter of 7-9MM._x000D_ 12mm: For silicone tube and hose with an inner diameter of 11-14MM._x000D_ 15.8mm: For silicone tube and hose with an inner diameter of 14-17MM. PackageList: 10 x Water Pipe Joint