After being formed in 1947 Wagner produced its first ever paint spraying gun in 1953 and are still making them over 60 years later, the Universal Spray System W 590 FLEXiO is a flexible sprayer for interior and exterior use. Created for larger projects where you want to spray both internal walls and other surfaces, there are two spray attachments one for low viscosity materials and one for high, and it can be used to paint walls, wood and metal.