F Airbrush Single Action Set This inexpensive airbrush is the perfect choice for simple hobby, instructional use and touch-up. The F is easy to master and perfect for beginners. F#1 Spray Pattern 1/32"- 3/4" Light Fluids Recommended Air Pressure .5 to .75 CFM @ 20 to 45 lbs depending on tip size & fluid being sprayed. Clean, dry air is essential for best results.