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: 100% Brand NewMaterial: PlasticColor: As Picture ShownSize: TypeInner diameterouter diameterLength * Width1/4''0.9cm / 0.3in1.5cm / 0.5in9 * 5.2cm / 3.5 * 2.0in1/2''1.2cm / 0.4in1.9cm / 0.7in9.5 * 5.5cm / 3.7 * 2.1in3/4''1.7cm / 0.6in2.3cm / 0.9in10.2 * 5.5cm / 4.0 * 2.1inQuantity: 1 piecePackage Weight: Approx. 37-45gPackage 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..