1Pcs Safety Non-Return Check Valves for Aquarium Fish Tank Standard Air Pumps

ITEM NAME:1Pcs Safety Non-Return Check Valves for Aquarium Fish Tank Standard Air Pumps Features: 100% brand new and high quality Great one way check valve for aquarium air pump. Durable and easy to install. Specification: Material: Plastic Color: black size:5.5cm Package included: 10x One Way Check Valve.Great one way check valve for aquarium air pump. 10x One Way Check Valve. Color: black.