Features : Product name: Positioner Material: plastics Function: used to line the IP board (digital sensors), can be adjusted according to the IP board size (Green) For right maxillary upper premolar/molar and left mandibular (Blue) For left maxillary premolar and right mandbular premolar/molar (Yellow) For maxillary/mandbular incisor -Anterior teeth One suit includes 3 Pcs Brand new and get from the factory directly Best seller in the international market