TCP Global Master Airbrush Brand 5 Piece Mini Cleaning Brush Set Kit, includes a How-To-Airbrush Manual Booklet TCP Global Brand 5 Piece Mini Cleaning Brush Set; Brushes come with a key ring and are about 3.5" long. Also includes a How-To-Airbrush Manual Booklet Ideal for cleaning small passages in all airbrushes, spray guns, tattoo equipment, etc The 5 Brush diameters vary from about 2, 2.5, 3.2, 4 to 5 mm. They are made of durable stainless steel with nylon bristles Easily clean paint off all the hard to reach areas in an airbrush, spray gun or any other item with small orifices that need cleaning like the fluid tip, air cap, paint cup Tattoo Artists can use the brushes for cleaning their equipment like tips, nozzles, grips and tubes