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 Product Material: Plastic Product Color: Transparent Product Size: Water Pipe Joint 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) Applicable to: 3.9mm: For silicone tube and hose with an inner diameter of 3-4MM. 4.8mm: For silicone tube and hose with an inner diameter of 4-5MM. 6.4mm: For silicone tube and hose with an inner diameter of 5-7MM. 8mm: For silicone tube and hose with an inner diameter of 7-9MM. 12mm: For silicone tube and hose with an inner diameter of 11-14MM. 15.8mm: For silicone tube and hose with an inner diameter of 14-17MM. PackageList: 10 x Water Pipe Joint