Each single pack includes 10 individual ear tips. Widex eartips are designed to work with Widex Hearing Aids. They come in a variety of styles and sizes, because every ear is different. Choose which style is right for you based on your hearing loss and size of your ear canal. It is important to make sure that the eartips are securely placed on the hearing aid. If you are not sure which eartips to purchase or how to place on the hearing aid, please consult your hearing care professional. Round one-vent Choose this eartip when your hearing loss is more moderate to severe and you need less venting. This eartip allows for both comfort and a full sound. Compatible Hearing Aid styles: oWidex Receiver-in-the-Canal (RIC) devices with receivers that do not have custom earpieces attached Widex Behind-the-Ear (BTE) devices with thin tubes that do not have custom earpieces attached. Available sizes include S, M, L