Quantity: We offer a 5-pack, which not only includes 40 filters. Compatible with hearing aids from well-known like for , for Resound, for Widex, for Unitron, for Jungle Care, and more. Simple to Use: Just utilize the included applicator to attach the filter to your hearing aid, preventing wax buildup and extending the lifespan of your hearing aids! Purpose: These guards to keep earwax, dust, grease, and moisture from obstructing your hearing aids. Important Note: Do not use the wax guard if you have a medical condition such as a perforated eardrum, or if you are using any ointments.Purpose: These guards to keep earwax, dust, grease, and moisture from obstructing your hearing aids. Color: Transparent & Black Material: plastic Package Contents: 5 set * Wax Guards Filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.