Description 12mm 90 Degree Bend The 12mm Airline Fittings are normally used with semi rigid airline. The fittings listed are 12mm Diameter and by pushing the airline inside the fittings it will create a airtight seal, if you want to change your air line at any time simply pull back the Blue ring and pull the airline out from the fitting. Air line of course, like the air stones, is essential for any Koi or pond keeper, and allows the air being generated by the Air Pump, to be delivered to the point where it is required.
