5.Super easy to replace the filters in less than a minute. Just use the removal end to remove the old filters, and use the cup end to install the new filters. Super quickly!. 4.Function: to keep ear wax, dust, grease and moisture away from blocking the hearing aids and prevent dust from entering the hearing aid so that protect your hearing aids and increase the longevity of your hearing aids! Keep the hearing aids clean so that keep your ears healthy. 3.Totally 4 Packs=24 Counts. 2.Higher quality, longer durability. For reasonable price, Our Oticon Prowax Minifit wax guard filters are made of high quality rubber. No need to change wax guards filters frequently so that save your money. 1.100% Compatible! Fit with OE, RIC, ITC, ITE, CIC. It is COMPATIBLE with Oticon (Ria, Ria Rite, Nera, Alta, Alta 2, Alta Pro, Alta Pro2, Cros, Siya, MiniRite, Opn, Opn S, Opn play, Xceed, Xceed play, Ruby, Dynamo, More), and any minifit receiver with 60, 85 or 100db. It also fits some other brand like Evolv, Phillips hearlink.Best Sellers Rank: See Top 100 in Health & Household. : B0B6V5SSW8. Manufacturer: COUCHINLARY. Date First Available: July 18, 2022. Product Dimensions: 4 x 2.35 x 0.59 inches; 1.45 Ounces.