Please leave us message if you want different size. Thank you1.10pcs/pack2.English Package3.Used For Dental orthodontic treatment4.Material: Super Elastic NITI5.Type: Rectangular 6.CE approved We have sizes0.014x0.025 upper, 0.014x0.025 lower0.016x0.016 upper, 0.016x0.016 lower0.016x0.022 upper, 0.016x0.022 lower0.016x0.025 upper, 0.016x0.025 lower0.017x0.022 upper, 0.017x0.022 lower0.017x0.025 upper, 0.017x0.025 lower0.018x0.018 upper, 0.018x0.018 lower0.018x0.022 upper, 0.018x0.022 lower0.018x0.025 upper, 0.018x0.025 lower0.019x0.025 upper, 0.019x0.025 lower0.020x0.020 upper, 0.020x0.020 lower0.021x0.025 upper, 0.021x0.025 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 regulatry agencies.If so, you can bid on this item only if 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.Seller name:allguestCity,State:SHENZHEN,ChinaTelephone number:0755-58772369