1/4'' Plastic Fish Tank Aquarium Water Flow Control Valve Hose Tube Pipe Connector Features: 1. This fish tank water flow control valve is a good product for you to keep fish.  2. Helps control the water flow through your hosing. 3. Made of quality plastic mateiral, durable and practical. 4. Suitable for fish tank or aquarium use. 5. Have three sizes to choose, better suit your hose pipe.    Specification: Condition: Material: Plastic Color: As Picture Shown Size:  Type Inner diameter outer diameter Length * Width 1/4'' 0.9cm / 0.3in 1.5cm / 0.5in 9 * 5.2cm / 3.5 * 2.0in 1/2'' 1.2cm / 0.4in 1.9cm / 0.7in 9.5 * 5.5cm / 3.7 * 2.1in 3/4'' 1.7cm / 0.6in 2.3cm / 0.9in 10.2 * 5.5cm / 4.0 * 2.1in Quantity: 1 piece Package Weight: Approx. 37-45g Package List: 1 * Fish Tank Hose Pipe Valve  Note: 1. This water flow control valve can't be used as tap water vavle. 2. Please allow 0~1 inch error due to manual measurement. Thanks for your understanding. 3. 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.