Wooster Brush 4731-2 1/2 Advantage Angle Sash Paintbrush, 2 1/2-Inch Exclusive blend of nylon and China bristle Nylon improves coverage and durability as well as clean out while China bristle provides the smoothest results Softest formulation for interior use of all oil-based or alkyd paints as well as low VOC coatings and enamels and high-grade acrylics Stainless steel ferrule Sealed maple wood handle