ReSound ThinTube Depth B - 5-pack

ThinTube with depth: B Right: 18629400 - -1B Right 18628700 - 0B Right 18628900 - 1B Right 18629100 - 2B Right 18629300 - 3B Right Left: 18630300 - -1B Left 18629600 - 0B Left 18629800 - 1B Left 18630000 - 2B Left 18630200 - 3B Left Available in 2 depths where A goes further into the ear canal. Red text for right ear, blue text for left ear. The tubes are available for the right and left ear and in each of five sizes from -1 to 3. Maintain good sound quality of your hearing aid by replacing the sound tube regularly. If the sound tube takes on a yellowish color or lost sound quality, it is time to replace the sound tube. 5 pieces per package.