The Wooster 9" Golden Flo 3/8" Nap Roller Kit is a painting tool set ideal for a variety of painting projects. Typically, the kit comprises a 9-inch roller frame, which serves as the handle for attaching the roller cover, as well as a 3/8-inch nap roller cover.
The 3/8-inch nap is the thickness of the fibers on the roller cover. A nap of this thickness is frequently appropriate for semi-smooth to semi-rough surfaces, providing for adequate paint application without leaving too much roughness.
The roller cover's "Golden Flo" name most likely relates to its high-quality construction and materials, which are intended to produce a smooth and even application of paint.