Esthetics and function fuse together in the design of the titanium cylinder hinge. No hinge screws are necessary, making these frames very long-lasting. Rodenstock has tested this durability in our Munich quality-center with more than 80,000 temple movements. Titanium caps at the temple tips ensure the perfect balance of the glasses. These special tips along with the filigree titanium front and the special polyamide temple form the esthetics and feel of the glasses.