Check the listing for details. 20 Packs Dental Orthodontic Niti Rectangular Arch Wire Super Elastic Ovoid/Oval. Condition: New. Listed at 23.74 USD. Introduction: 1.10pcs/pack 2.English Package 3. Used For orthodontic dental treatment 4. Material: Super Elastic NITI 5.Type: Rectangular We have sizes of: 0.016x0.016 upper, 0.016x0.016 lower 0.016x0.022 upper, 0.016x0.022 lower 0.017x0.022 upper, 0.017x0.022 lower 0.017x0.025 upper, 0.017x0.025 lower 0.018x0.022 upper, 0.018x0.022 lower 0.018x0.025 upper, 0.018x0.025 lower 0.019x0.025 upper, 0.019x0.025 lower 0.021x0.025 upper, 0.021x0.025 lower One pack just includes one size, not mixed pack. FDA Statement: The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, do not bid on this item unless you are an authorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item. This item has been cleaned and treated according to the manufacturer's instructions