Hand-chiseled for easier cutting-in. Feature a blend of Dupontª Chinex and Orel Polyester solid round tapered filaments. Unique Chinex characteristics allow filaments to self-flag as the brush wears. Orel Polyester added for ideal stiffness retention. The combined result is greater paint lift, smooth application, high abrasion resistance, and significantly faster cleaning. Recommended for use with all paints, especially todayÕs high-solid, low V.O.C. paints and heavy-bodied latex coatings that can be more difficult to apply smoothly.