Mini Paint Roller Cover, Cover Type Mini, Surface Texture Medium, Semi-Rough, Semi-Smooth, Compatible Roller Frame Style Wire, 4 in Overall Length, 3/8 in Nap Size, Surface Material Drywall, Paint Type Oil Based Paints, Water Based Paints, Core Diameter 13/16 in, Cover Material Acrylic, Core Material Polypropylene, Washable Yes, Package Quantity 2.