The special feature of these mirrors is the patented mirror surface, which is worked directly into the metal of the mirror head. The aluminium itself is the mirror surface! This creates a weightless design without edge or frame and the mirror body becomes very thin and light. A shattered or fallen out glass is simply not possible. The convex mirror surface is produced in a flycutting process by means of diamond tools on ultra-precision machines. It is then made resistant to oxidation, corrosion and scratches by a complex plasma coating process in a vacuum.