Features: 1Replacement Accessory: When the tube becomes hard, we need to replace it, which helps the transmission of sound in the hearing aid tube, suitable for BTE. 2Easy To Install: Used for connecting earmolds and hearing aids, easy installation, effective sound transmission, suitable for most hearing aids. 3Simple And Convenient: Change hearing aid tubes by yourself, no need to go to the audiologist for tubing replacements, simple operation, bring you convenience. 4PVC Material: Hearing aid tube is made of excellent PVC material, safe and eco friendly, hygienic and non toxic, not easy to harden, durable for use. 5Portable Design: 10pcs of hearing aid tubing are available, meet your use needs, light weight, easy to carry, suitable for home and travel use.Item Type: Hearing Aid TubingMaterial: PVCCharacteristics: With metal tube lockOuter Diameter: Approx. 3.6mm / 0.14inInner Diameter: Approx. 2mm / 0.08inPackage Included:10 x Tube