HW Brass Saver set for French Horn includes a pull-through brush for the leadpipe/slides and a double-ended stick brush for the valve casing/tubing. Will not scratch, shed, or get stuck, and can be used wet or dry. Brass-Saver brushes offer a safe and effective method of cleaning corrosive saliva and mineral deposits from the inside of your horn. They can be used wet or dry, won’t get stuck, and they contain absolutely no metal so they won’t scratch.