The Roll A Tray features a unique design that makes it easy to maneuver. Features a trough near the back of the tray that allows you to effortlessly steer the tray around the room. Holds about 1/3 to 1/2 gallon of paint. Heavier than your standard paint tray and has a wider foundation. Features a washboard-style screen and includes a drain that flows the excess paint back into the paint well.