10PCS One Way Pump Check Valves Plastic NonReturn Check Valve for Fish (Black )

Made of high quality material, , not easy to aging, service life. Easy to install, the check valve can be used for most aquarium pumps. Great one way check valve is an effective for your pump. Item Type: Check Valve Material: Plastic Product Quantity: 10 Pieces in a Pack Inner Hole Diameter: 3mmCelsius 0.2in Single Product Weight: Approx. 3gCelsius 0.1oz