PRO/DOO-Z FTP RR868-9 Paint Roller Cover, 9 in, 3/8 in Nap, 4 Pieces, Polypropylene Core | Shed-resistant, non-matting and better paint flow, Pro/Doo-Z FTP has everything you want in a roller for flawless results and more new Hydroflow technology enables the cover to release paint smoothly and consistently it makes painting easier because there's no need to go back and rework an area to get ideal coverage the dense, proprietary ber construction retains bounce-back and offers excellent nish quality with all paints.