Betan 6PCS Aquarium Air Stones Fish Tank Bubbler Ceramic Airstones 1.6" (40mm) - Product Features
- Diffuses oxygen efficiently and smoothly in your fish tank
- Fits most air pumps. Connector size: 4mm external, 4mm internal
- Keep your fish healthy and energetic
- Durable and sturdy material. Safe and non-toxic to your fish
- Size: 1.6inch diameter * pack of 10