Air stone made of plastic, rust resistance. Check valve is made of silicone, long usage time.Check valve air stone provides constant bubbles to increase oxygen, suitable for any sizes of air pump.
Sizes:
Small and Large
Air stone made of plastic, rust resistance. Check valve is made of silicone, long usage time.Check valve air stone provides constant bubbles to increase oxygen, suitable for any sizes of air pump.
Sizes:
Small and Large