Heat gun nozzle attachments connect to the nose of the gun barrel and modify the airflow pattern to suit specific applications. They are compatible between brands as long as the nozzle attachment matches the barrel dimensions. Reducers (also known as concentrators) focus heat into a cone to target small areas for welding, soldering, and shrinking applications. Reflectors hook around pipes, tubes, or other parts to apply heat evenly to all surfaces. Spreaders (also known as fishtail nozzles) direct hot air into a wide slot and distribute heat over a broad surface area. They are commonly used for drying, thawing, and removing paint and flooring.