PACKAGE INCLUDES 16Pcs / set, 8pcs red filter, 8pcs blue filter, can meet your basic demand. FEATURES This earwax filter is waterproof and oil resistant, which can extend the life of your hearing aid by preventing earwax or water from getting stuck inside. SUSTAINABLE USE Made of quality material, which promises long term use. We recommend that you change these filters regularly as they can fill with wax and / or non-visible debris and block the sound of your amplifier. EASY TO WEAR Mini size, fits RESOUND hearing aids. EASY INSTALLATION FOR EACH AGE Easy to install, make sure older groups or others are comfortable. Product This earwax filter is waterproof and oil resistant, which can extend the life of your hearing aid by preventing earwax or water from getting stuck inside. The mini size is only suitable for RESOUND hearing aids. Specification: Item Type: Hearing Aid AccessoriesMaterial: plastic Color: as pictures shown Item Size: Approx. 6.5 x 4.3cm / 2.6 x 1.7inch Item Diameter: Approx. 4.3 cm / 1.7 inch Item Weight: Approx. 9 g / 0.3 oz Function: earwax guard How to use: 1. Use the screen to replace the old filter. 2. Clean the edge of the horn on the hearing aid. 3. Use the other end to stick a new filter. 4. Install a new filter and make sure it is firm. Package includes: 1 * Set of earwax filters (8 red filters, 8 blue filters) Note: 1. Check that the filter is firmly installed, preventing it from being trapped in the auditory meatus. 2. Replace the earwax filter depending on the circumstances after use every six months or one year. 3. Use a brush to frequently clean the earwax filter.