The hearing aid domes fit with Oticon minifit hearing aids:Oticon Nera,Oticon Alta,Alta Pro,and those hearing aids receivers with new MiniFit speakers.Hearing aid domes should be replaced once a month,because of cerumen wax buildup behind the wax guard.These domes for hearing aid accessories fit all ear types, can be used on behind the ear hearing aids,pocket hearing aids,in-ear hearing aids and sound amplifiers,so you can go on with your life and your everyday activities.Notice:If a perforated eardrum,please do not the hearing aid domes.color:As shownMaterial:plasticsize:8mmPackage Contents:2 x hearing aid domesOnly the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.