EFFECTIVE PROTECTIONThe hearing aid wax guard filters is not only waterproof and oil-resistant, can prolong the life of your hearing device by preventing earwax or water from being trapped inside. APPLICABLE BRANDThis hearing wax guard mini size, can fit most hearing aids for RESOUND, PHONAK, UNITRON, WIDEX, ACOSOUND, etc. (Do not fit for SIEMENS, Starkey).Please confirm your hearing aid model before purchasing. HOW TO USEFirstly use screenchanger to take out old filter.Secondly clean the edge of the horn on the hearing aid. Then use the other end to stick a new filter.At last install a new filter and make sure it firm. PREMIUM MATERIALThis mini earwax filter are made of quality material, which ensures durability of long time use.8 Pcs / set, can meet your basic demand.Easy to install, make sure the older or other groups at ease. 100% WARRANTYWe promises every customer a 100% shopping satisfaction, feel free to reach us if you have any questions about your purchase. We will give you a professional and detailed reply within 24 hours. Click to buy now! Spec: Item Type: Hearing Aid Accessories Material: Plastic Color: As Pictures Shown Item Length: Approx. 4 cm / 1.6 inch Item Weight: Approx. 8 g / 0.3 oz Function: Earwax Guard How to use: 1.Use screenchanger to take out 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 firm. Package Include: 1* Set of Earwax Filter (8 Pcs) Notice: 1.Please confirm the filter installed firmly, preventing it from being trapped in auditory meatus. 2.Replace the earwax filter according to the circumstances after using every six months or one year. 3.Use brush to clean the earwax filter frequently.