Purdy 144080515 XL Elite Dale Sash Paint Brush, 1-1/2 inch Featuring Orel polyester and SRT Chinex made to simulate natural bristle, while being able to use in water based products Long trim, natural handle Square edge, stainless steel ferrule For all paints Coating Types: Low-VOC, Latex, and Oil-Based Paints, Primers, and Stains Project Types: Walls, Ceilings, and Trim Filament Materials: Chinex Nylon/Orel Polyester Blend