Features:
100% Brand new and high quality
Great one way check valve for aquarium air pump.
Durable and easy to install.
Fit standard aquarium air pipe of 4mm inner diameter.
Material: Plastic
Color: Transparent white

Package includes: 5 x One Way Check Valve

Note:
1.Please allow 0.1-0.5 inch differences due to manual measurement, thanks.
2.Please understand because of the light irradiation or computer display difference, the item`s color might be slightly different from the pictures.