Medisporex set of 6 impression trays perforated rim lock. These are 3 sets of upper and lower small medium and large perforated impression trays of each size designed for patients without teeth. Our trays have rounded edges with an undercut made with welded wire for better retention of impression material. It offers strong resistance to distortion when taking out the cast from the tray. It is resistant to corrosion. - Set of 6 pcs. **For further product information, please contact Chat Support**