The Wooster 6" Mini-Koter 3/8" Nap Shed-Resistant Roller Cover is intended for easily applying paint to a variety of surfaces while minimizing shedding for a cleaner finish. With a 3/8" nap, it's appropriate for semi-smooth to semi-rough surfaces, offering good coverage while allowing for a moderate amount of roughness. The shed-resistant design guarantees that the roller cover stays up well throughout usage, avoiding the possibility of loose fibers damaging the painted surface. This bundle includes two roller covers, providing convenience and ensuring you have spare covers for longer painting operations. Overall, it's a dependable option for producing professional-grade results.