Oil free, with air filter, and will get cleaner air source ... quality aluminum alloy chassis, coming with mini airbrush holder, beautiful and practical2. Oil free, with air filter, and will get ... cleaner air source.3.Piston,Low noise:under 47DB4. Can work continuously, and start with ... ,GS,ROHS,ETL,CETL Approved. Professional Airbrush hobby set with 7cc Airbrush