Genuine Purdy replacement part. The Purdy Roadrunner paint roller is a blend of naturally absorbent wool and resilient polyester that prevents matting and is a great alternative to lambskin. Designed for rough to extra-rough surfaces, this high-quality applicator is made to last. Choose latex and oil-based paints and primers in flat, eggshell and satin sheens for optimal results. Ideal for wood siding, decks, flooring and fences.