Time saving: the Terratek 18v cordless paint sprayer paints a wall 8 times faster than a brush, saving time and effort. Big surface projects like walls, ceilings, exterior siding and fences get a consistent finish with any coating. With improved pattern design and spray control, painting can be done indoors or outdoors with less mess and clean-up time. 3 spray patterns: lightweight yet powerful, this spray gun sets up in just minutes. It features a viscosity cup that lets you measure the density of the material you're using and adjust the spray pattern as needed. The spray nozzle requires only a simple turning of the ears on the air cap to allow for a round, horizontal, or vertical pattern, depending on your application.