Tools4Boards Buff Rectangular Brush Kit (3 Piece), Beige Our most popular 3 German-made rectangular brushes packed in a handy molded EVA zippered carry bag Buff Hard Brass is to be used before waxing to open the base structure and prepare the base for wax, and as a first brush after waxing and scraping Buff Hard Horsehair is ideal middle brush for freeing up the base structure after ironing, scraping and a few passes with a brass brush Buff Hard Nylon is ideal for final base polishing, typically used as a final brush after scraping