JK PRO/DOOZ 6-1/2"X1/2"|Wooster’s Jumbo-Koter Pro/Doo-Z roller is made of an exclusive high-density white fabric (with golden pinstripes) that stays resilient and resists matting for the smoothest professional finish possible. It works great with all paints, enamels, primers and adhesives. It has an open ¾” core that makes cleaning easier, and fits on any Jumbo-Koter cage.