Item Type: Sound aid tubes <br>Material: PVC <br>Outer Diameter: Approx. 3.6mm / 0.14in <br>Inner Diameter: Approx. 2mm / 0.08in <br>Characteristics: Sound tube with metal lock can effectively reject howling.<br>1、[Transmission Of Sound] Replaceable sound aid tubes effectively transmit sound, therefore you hear more clearly, suitable for most sound amplifier. <br>2、[Reason For Replacement] As the ear tube gradually hardens, wearing BTE sound aids will become uncomfortable, so it needs to be replaced. <br>3、[Operate It By Yourself] Don't need to go to a professional relative shop to replace it, you can change it by yourself, saving much time and energy. <br>4、[Equipped With Vent Cleaner] Using cleaning tool is more convenient and practical to clean clear sound aid tube and prolong its service life. <br>5、[Multi Functions] R shape sound amplifier tube with metal lock can effectively reject howling noise to get a comfortable wearing experience.10 x <br> <br>Sound&nbsp;Aid&nbsp;Tubes<p>1 x&nbsp;Vent&nbsp;Cleaner</p>