Feature:Orthodontic Stainless Steel Arch Wire (rectangular) 1. 10pcs/pack 2. English Package 3. Used For Dental orthodontic treatment 4. Material: Stainless steel 5. Type: RectangularSize Option: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 lowerone 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. So you can bid it on this item only if you are an authorized purchaser. If the item is subject to FDA regulation,We have to verify your status as an authorized purchaser of this item before shipping of the item.