Usage Tips:1、Prevents Earwax Accumulation: Water and oil repellent filter that prevents earwax or water from trapping inside, extending the service life of your sound aid. 2、Wax Filter Replacement: Wax guard filter is used to replace the wax filter on the sound amplifier, 40pcs wax filter are available, satisfy your replacement needs. 3、Fitment: Fit for Phonak sound aid, the disk is easy to rotate and operate. Important and necessary accessories for the elderly and hearing impaired people. 4、ABS Material: Sound aid disk wax guard adopts excellent ABS material, safe and eco friendly, firm and sturdy, not easy to break, wear resistant and stable. 5、Multiple Applicable Scenarios: Light weight and small, easy to store and carry, can be easily put into your bag, perfect for home, school lectures, office, etc. Item Type: Disk Wax Guard Material: ABS Quantity: 5pcs disk wax guard / bag (8pcs wax filters per disk, 40pcs in total) Applicable Model: Fit for Phonak sound aid 5 x Disk Wax Guard (40pcs wax filters in total)