9 In. x 3/4 In. nap internally-fed roller cover for use with Wagner roller products. Specially designed roller cover allows paint to flow from the unit through the cover, eliminating the need for messy trays. Ideal for rough surface applications. Wagner 9 In. x 3/4 In. Nap Roller Cover 3-in x 3/4-in Nap Knit Polyester Paint Roller Cover | 0155208