One Pack of 8 Resound Cerustop Filters. Wax guard for Resound Surfit receiver-in-canal  hearing aids using the Cerustop or Wax Trap systems. They are fully interchangeable with the WaxTrap2 filters. To remove the old wax guard, insert the naked end in the opening of the wax guard and pull out the old guard. To insert the new filter, flip the tool and insert the new wax guard.

"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. "