Feature: 1. Prevents Earwax Accumulation: Water and oil resistant filter that prevents earwax or water from trapping inside, extending the service life of your hearing amplifier. 2. Wax Filter Replacement: Wax guard filter is used to replace the original wax filter on the hearing amplifier, 8pcs wax filter are available, satisfy your replacement needs. 3. Applicable Model: 2.5mm hole diameter, suitable for Siemens hearing amplifier, easy to install and replace, bring you convenience, simple and practical. 4. Hearing Amplifier Accessories: Important and necessary accessories for the elderly and hearing impaired people, safe and eco friendly, has a long service life. 5. Portable Design: Light weight and small, easy to store and carry, can be easily put into your bag, perfect for home, travel, office work, etc. Specification: Item Type: Hearing Amplifier Wax Guard Material: ABS Hole Diameter: Approx. 2.5mm / 0.1in Applicable Hearing Amplifier: Suitable for Siemens hearing amplifier. Package List: 1 x Storage Box8 x Wax Guard Filter Note: 1. Always use a small brush to clean the cerumen guard.2. Replace the cerumen guard between half a year and a year according to the earwax condition.3. After installing the cerumen guard, make sure that the installation is firm to avoid falling into the ear canal.