The Proform Picasso Stiff Chisel Sash Oval Angled Brush features Advantage PBT, a proprietary blend of filaments that offers effortless paint application and easy cleaning. It also boasts a Hardline no-drip interior construction that permanently connects the handle and ferrule, ensuring the ferrule will never come loose. Additionally, this design eliminates any area where paint, cleaners, and water can accumulate, resulting in a no-drip benefit after cleaning.