100Pcs Dental Orthodontic Niti Arch Wire Rectangular Super Elastic natural form

And there are 3 midline marks on upper arch and 1 middle mark on lower arch. Type: Rectangular. Shape: natural form. 0.016×0.016 upper, 0.016×0.016 lower. 0.016×0.022 upper, 0.016×0.022 lower. 0.017×0.025 upper, 0.017×0.025 lower.