Features: 1.The air pipe can be divided into two parts. It is suitable for all kinds of air pump to increase the air supply capacity of equipment or for other purposes. 2.Oxygen pump can be used in separate aquarium, which can be matched with oxygen pipe valve for better performance. 3.Connect with 4 mm/ 0.15 inch diameter air pipe for use. 4.Help to increase oxygen and keep air new, create healthy environment for your fishes. 5.Easy to connect hose and easy to use, simple and convenient. Specification: Item Type: Air Pump Connector Material: Plastic Optional Color: As Pictures Shown Product Size: Diameter: Approx. 4 mm/ 0.15 in L Shaped Connector: Approx. 2.1x2x0.6 cm/ 0.82x0.78x0.23 in Three-Way Connector: Approx. 3x1.6x0.5 cm/ 1.18x0.63x0.19 in Straight Pipe: Approx. 2.7x0.6 cm/ 1.06x0.23 in Bypass Three-Way Pipe: Approx. 3x2.5x0.5 cm/ 1.18x0.98x0.19 in PackageList: 10 x L Shaped Connector10 x Bypass Three-Way Pipe10 x Straight Pipe10 x Three-Way Connector Note： 1. Please allow 1?3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.