PURE PVC MATERIAL: Made from high-quality pure PVC, this airline tubing is flexible, durable, and scratch-resistant with a thickened wall for repeated, rough use. VERSATILE APPLICATIONS: Ideal for basic aeration systems in fish tanks, aquariums, hydroponics, ponds, water gardens, siphon setups, and lab use. STANDARD SIZE: 4 mm inner and 6 mm outer diameter—compatible with most standard air pumps, CO₂ systems, and high-pressure setups. KINK-RESISTANT DESIGN: Flexible tubing can be twisted or bent without collapsing; smooth inner surface ensures optimal air flow with no blockages. SAFE & REUSABLE: Resistant to cracking, heat, corrosion, and leaks—non-toxic, long-lasting tubing safe for all aquatic life and reusable over time.
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