Lee’s Plastic Tee Airline Connectors (12 pack) – A set of plastic T-shaped connectors used to split air flow from an aquarium air pump. Each tee fits standard airline tubing, allowing you to run two air stones or devices from one pump outlet. These tees are great for customizing your aeration setup, are aquarium-safe, and come in a convenient pack of 12 – plenty for multiple tanks or future projects.