If you're looking to add a 2nd and 3rd airbrush to your compressor, this item is what you need. Simply connect air hose tubing from the compressor to this adapter, and then connect each of the remaining inlets on the adapter to their own tubing which leads to separate airbrushes. Airhoses not included, sold separately. This splitter works only with the Inkedibles Heavy Duty compressor/airbrush.