Made of plastic, the is smooth and not damage the inside of the flute. The flute cleaning rod is approximately 13.6 inch / 34.5cm long, and the flute cleaning cloth is 5.79 inch x 5.9 inch / 14.7cm x 15cm. As an important part of the instrument care and maintenance system, this cleaning accessory keep your flute in a good tone. Just go through the cleaning cloth and pull out the flute. Used to clean and dry the interior. Suitable for all kinds of flutes and piccolo.