Wagner Smart Flow Powered Paint Roller. Paint fast and paint smart with this easy-to-use roller with powered feature for easy filling and dispensing of paint. Power button provides a smooth, continuous flow of paint to the roller. Unit holds 22 oz. of paint - enough to paint up to a 7' x 10' area on one fill. Reduces fatigue by eliminating pushing a plunger or squeezing a trigger. Also features a plunger release mechanism to allow for manual painting, filling and cleaning. Power suction draws paint directly from the can (can lid and suction tube are included). Power button with forward and reverse functions advances plunger and pushes paint to the roller. 9" x 3/8" nap roller cover and spatter shield. Ergonomic handle. Use with oil-based or latex paints. Perfect for medium to large projects and ceilings. Made of 1/2" steel and plastic. Requires four AA Alkaline batteries (included) which last for eight gallons of paint. Manual flush to clean. 48"L assembled.