Polyester knit fabric for all paints, stains, and primers. Provides consistent application. 2-ply, polypropylene core. Fits standard 9 In. roller frame. Length: 9 In. \nNap Size: 3/8 In. \nSurfaces: Semi-Smooth \nCore Type: Standard, Polypropylene \nMaterial: Knit \nInterior/Exterior: Interior \n