If you're looking to add a 2nd 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 has valve control (allows for dedicated and higher powered pressure to the dedicated airbrush) and works only with the Inkedibles Heavy Duty compressor/airbrush.