The Wooster 7" Super Doo-Z 3/16" Nap Roller Cover is a specialist roller cover used to provide exceedingly smooth finishes. With a 3/16" nap, it's great for surfaces that require very thin coatings, like cabinets, doors, and trim. Wooster's "Super Doo-Z" brand is known for great paint pickup, easy application, and durability. This roller cover provides precise control and minimum stippling, allowing you a smooth finish with ease. It's a popular option among professional painters and craftspeople who value superior outcomes.