I used only one from Kobayashi Pharmaceutical, and I think I used several from Dental Pro. I don't count them. I will ship them as they are in a plastic bag, so please purchase if you don't mind. These are used items stored by an individual, so please refrain from purchasing if you are concerned. Immediate purchase is OK & first-come, first-served. I cannot accommodate holds. Even during negotiations, I will prioritize those who purchase immediately. Packaging will be kept to a minimum. Please feel free to ask if you have any questions.