Wagner 0525037 5.4 GPH Power Painter featuring Optimus Dual Tip Technology Optimus Dual Tip Technology provides even coverage, less overspray and more control Great for decks and outdoor furniture Sprays thinned latex and oil-based stains and paints, water sealers and wood preservatives Single-speed operation Includes extra atomizer valve Sprayer works only with thin bodied materials. Optimus dual tip for better control and superior coverage Control knob for optimal results when spraying different materials 1 quart container for mobility Extra atomizer valve Tungsten carbide piston, cylinder and spray tip for maximum life