5-Pack Check Valves For Aquariums 4cm Long Plastic Anti-Backflow Air Pumps Valves Perfect For Fish Tanks

Features:
Efficient, effective protections for your pumps
Great one-way check valves for aquarium air pumps
Non-return anti-siphon valves to protect your electrical equipment (air pumps
For standard aquarium air pipes of 4mm inner diameter
Small and compact, easy to install

Specifications:
Material: Plastic
Length: app.4cm/1.57''
Main Color:

Package Includes:
5Pcs One-Way Check Valves

Note:
1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.
2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!