5pcs Home Fish Aquarium Air Pump Check Valve 5 X One Way Non-Return Check Valve Aquarium Co2 System Air Pump three colors

Features:
Safe and durable products・ great one way check valve for aquarium air pump
Protect your air pump by preventing aquarium water from back siphoning during a power outage
Place in your airline tubing between your air pump and aquarium water to prevent water returning down the air line.
Made of durable plastic・small and compact・It's easy to install
Compatible with standard aquarium air pipe of 4mm inner diameter
Perfect accessories for better life

Specifications:
Material: Plastic
Dimension: Approx.53mm x 15mm x4mm (Length*Diameter*Tubule diameter)
Color: Clear・Red・Black
Quantity: 5pcs

5 x Check Valve