ABESTAIR Airbrush Filter in-line Water Moisture Trap Mini Air Filter Water Oil Separator with 1/8" Threads

I would highly recommend getting an inline moisture trap. Compressed air holds water vapor which condenses when the air expands again. The moisture trap on the compressor will catch a lot of it but not all. Especially in more humid climates and on cooler days, water will collect in your hose to the point the airbrush starts spitting water, ruining your paintwork. I ran into that issue a few times until I did my research and ended up buying one of these... https://www.amazon.com/ABESTAIR-Airbrush-line-moisture-filter/dp/B00HIB8128/ Best few bucks I spent on my setup. Should you buy more airbrushes, a quick connect system is imperative too. https://www.amazon.com/Disconnect-Connectors-Adjustment-Accessories-Compressor/dp/B08X4K664K/