Hearing Aid Ear Piece Bell Shape Domes 10-Pack Comfortable PSAP Kit Ear Tips Invisible

Hearing Aid Ear Piece Bell Shape Domes 10-Pack Comfortable PSAP (Personal Sound Amplifiers Product) Kit Ear Tips Invisible, Perfect for CIC Air 

This is a hearing aid Bell Shape Domes set of chosgo CIC models with 10pcs of 6mm or 9mm or 12mm units.

These domes could be used with Chosgo CIC hearing aids, or Signia, Otofonix, LifeEar, Retone, Beltone, Newsound, Austar, Advanced Hearing, Hearing Assist or MD hearing aids.

If the ear dome is too big, your ear canal will feel pressure and will not be comfortable.
If the ear dome is too small, the sound will be leaked and you will hear a terrible squealing.
So it's important to choose your suitable size carefully in advance.
If you already know this size will be suitable for you, then please go on. 

They are

6mm Bell Shape Domes
9mm Bell Shape Domes
12mm Bell Shape Domes