Description
The non-return aquarium check valves are made of plastic and suitable for most of aquarium air pump. It prevents your air pump from getting water running back into your pump. 【Specification】：Length: 1.9in/4.8cm, weight: 0.14oz/4g. It fits aquarium airline tubing of 4mm inner diameter. Please check and ensure the right size of the tubing for the check valve before ordering. 【Durable Check Valve】：The material the aquarium check valve is made of is high quality plastic, featuring of durable, sturdy
