Refill brushes and rollers for both the Accubrush MX and Accubrush XT Paint Edgers. Note, these are ONLY the Refill Brushes and Rollers, not the tool itself. Brushes and rollers are proprietary to the Accubrush Paint Edger tools. Kit contains 4 rollers and 4 precision micro-brushes. Roller fabric is standard 3/8 inch poly blend which will work on a wide variety of walls from smooth to textured. They are approximately 2 inches in diameter and 4 inches long. Rollers feature the unique quick-release end-cap system which ensures that the rollers are precisely positioned on the Accubrush paint edger so that they deliver exactly the right amount of paint to the edge where the micro-brush cuts in the final line against the trim. Rollers are washable and reusable. Micro-brushes are made of nylon with a tapered bristle. They are washable and reusable. The Accubrush Paint Edger system comes with a one-year warranty and a 30-day money back guarantee, no questions asked. Please contact us via amazon if you have any questions. We do have a customer service department and are fast to answer your concerns. Designed in the USA, manufactured in China.