4RPYS 4" Polyester Refill (Yellow) is designed for smooth and efficient paint application in detailed and small-area work. Made from high-quality polyester material, it offers excellent paint absorption and even distribution for a clean, streak-free finish. The 4-inch size is ideal for corners, edges, doors, and tight spaces, providing better control and precision. Compatible with standard 4-inch roller frames, it is suitable for use with various paints, delivering reliable performance for both professional and DIY applications.