✅ Specification:
· Inner Diameter: 4mm/0.15”
· Outer Diameter: 6mm/0.23”
· Color: transparent
· Material: silicone
✅ Features:
- Aquariums, fish ponds, the oxygen pump dedicated connection hose, is essential supplies oxygen pumps and other equipment output.
- This air line with a standard size (4mm internal diameter) that fits most standard aquarium air pumps and air stones.