Edger paint rollers foam For areas that are too small for brush or 3 inches roller. For trimming around baseboard, molding, door frames, etc. Also for arts, crafts and hobby work. Does not leave unsightly fuzz, lint or seam marks. Foam conforms to surface irregularities and provides contour coverage. Will not mat down. Has a reservoir action and carries most of the paint below the surface in thousands of tiny open cells. Less frequent dipping and less spreading out of paint. Cleans quickly and easily. 1-1/8 inch wide by 2-1/4 inch diameter roller.