Wooster Jumbo-Koter Microfiber 4-1/2 in. W X 3/8 in. Paint Roller Cover are engineered specifically to pick up and release more paint than any other microfiber roller. The unique, European blend reduces shedding and delivers the smoothest finish in all flat, eggshell and satin paints, stains and enamels. Ideal for low VOC, fast-drying and deep-color applications. The spray-like results are also an excellent choice for applying varnishes.