Thermally Activated and Pre-Programmed for Total Control The easy to use Nitanium Palatal Expander takes expansion a step beyond. This extraordinary expansion appliance has the capacity to rotate, upright, distalize and expand anterior and posterior with gentle biocompatible force. Once exact correction is achieved this pre-programmed appliance stops expanding and lies passive. Easily inserted into lingual sheaths on 1st molar bands.Pack of 1.