10pcs Aquarium Fish for Co2 Water Air Line Way Non-Return Check fo
brand new and
Color: See pictures
Great way check for for aquarium air
Protect you air by preventing aquarium water from back siphoning during a power outage;
Small and compact
It's easy to install
for standard aquarium air pipe of 3.5-4mm inner diameter
Size:See the picture
Quantity:10Pcs
Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!