AW 0.2mm Premium Dual-Action Gravity Feed Airbrush Gun Painting Tattoo Nail Art Tool Kit Hobby Air/Fluid Control Knob with Rocker for controlling the air brush easily and labor-saving Removable Needle and Nozzle Cap helps you to spray the full range of spraying and stippling effect Built-in teflon O-ring for nozzle cap and better for corrosion resistance