SkyVac Internal Brush Set Skyvac are often considered the market leaders in high level cleaning equipment, providing a number of different solutions to internal cleaning in hard to reach areas, external cleaning and gutter cleaning. This internal brush set has been designed to be used in conjunction with the SkyVac cleaning equipment, and is to be used on internal cleaning projects. The brushes each have a slightly different role, from reaching into small corners, to cleaning larger high areas and more.