U-shaped Glass Connector For Co2 Diffuser & Aquarium Pumps. Enhance Your Aquarium Setup with This U-Shaped Air Pipe Connector and CO2 Refiner, Crafted from High-quality Transparent Glass. Designed to Improve CO2 Diffusion and Oxygenation, It Seamlessly Integrates into Your Tank's Ecosystem. Available in 10mm, 15mm, and 20mm Sizes, It Fits Various Aquarium Dimensions, Making It Perfect for Connecting Air Tubes with Ease. Summary of Features: - Application: CO2 Diffuser, Oxygen Pump - Type: Aquarium Air Tube Connector - Material: Transparent Glass - Shape: U-Shaped - Inside Width Options: 10mm, 15mm, 20mm - Compatibility: Fish Tanks and Aquariums - Included: 1 X CO2 Refiner To Install, Simply Moisten the Inside of Your Air Tube and Slide It over the Connector. Elevate the Beauty and Health of Your Aquatic Environment with This Essential Accessory..