Key Features 2 Metres Clear Airline Strong material 4/6mm internal diameter For use with the OxyMax Air Pumps Genuine Oase Indoor part Replacement Airline Hose, for use with the Oase Aquarium OxyMax Air Pumps. This Airline tubing is made of robust plastic and can easilt connected to the OxyMax Air pump and the corresponding Air Outlet. The airline comes in 2 metres and can fit any connection of 4/6mm. Can also be used with other similar sized aquarium air pumps.