Paint Roller Cover, Cover Type Standard, Surface Texture Medium, Semi-Rough, Semi-Smooth, Compatible Roller Frame Style Cage, 18 in Overall Length, 1/2 in Nap Size, Surface Material Drywall, Masonry, Wood, Paint Type Latex Paints, Oil Based Paints, Core Diameter 1 1/2 in, Cover Material Polyester, Core Material Polypropylene