After cleaning a part in solvent or washing it with water, you need to dry it completely to prevent rust. A blow gun attaches to your air line and uses a simple trigger valve to blast compressed air. It is ideal for clearing dust, dirt, and water out of blind bolt holes, cleaning brake assemblies, and drying off machined parts before reassembly.
Never point an air blow gun at your skin or eyes. The high-pressure stream can force dirt particles under your skin or push air directly into your bloodstream, which is a lethal medical emergency. OSHA regulations require safety blow guns to have small vent holes on the side of the nozzle tip. This drops the tip pressure below 30 PSI if the nozzle gets blocked, preventing injury.