These are the latest Signia 3.0 Eartips for the AX and X hearing aids. They will fit both the Charge-n-Go and the Styletto versions. They are the latest (3.0) eartips to go with the latest receivers (3.0). They are genuine, from Signia tips. They will also fit Widex hearing aids as well as MiracleEar, TruHearing, Hear.com, Rexton, and other Sivantos-made hearing aids. They are in stock at my hearing center Heartfelt Hearing in Mesa, AZ. If you are not sure whether these are the right tips for you send a message with a picture through eBay messaging. I should be able to guide you to the right listing. These are NOT click domes like the domes for the previous generations (the X and NX) These are not hearing aid…only parts for them but ebay requires this disclosure anyway FDA Disclosure „According to the FDA, it is in your best health interest to obtain a professional medical evaluation before purchasing a hearing aid and you are encouraged to do so before bidding on this item. If you choose to not obtain a medical evaluation before purchasing this item, I am required by law to provide to you and obtain from you a signed written waiver of the medical evaluation, and I am required to provide to you a copy of the User Instruction Brochure for a hearing aid, review the contents of that brochure with you, and afford you time to read the brochure. You must provide to me either a signed statement from a physician or a signed waiver before I will deliver this item to you. Upon your request, I will also provide to you a copy of the User Instructional Brochure for the hearing aid or the name and address of the manufacturer or distributor from whom a User Instructional Brochure for the hearing aid can be obtained.“