You can choose any size of Arch wires from the above 18 Sizes. Material:Stainless steel. 16x16 upper, 16x16 lower. 16x22 upper, 16x22 lower. 16x25 upper, 16x25 lower. 17x22 upper, 17x22 lower. 17x25 upper, 17x25 lower.
eBay