Pro/doo-z ftp 4-1/2" x 3/8" nap jumbo-koter mini roller 2-pack. shed-resistant, non-matting, and better paint flow, pro/doo-z ftp has everything you want in a roller for flawless results and more! wooster's exclusive 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 perfect coverage. the dense, proprietary fiber construction retains bounce-back and offers superior finish quality with all paints.