Description evo_base is an innovative headrest system that is used in neurosurgical operations. It impresses with its simple, ergonomic and safe handling, which enables the skull to be fixed carefully and accurately. The patented synchro tensioner and the movable fixing pins with integrated torque meter allow intuitive single-handed operation during positioning. The application of solid titanium not only gives the system high stability at low weight, but also maximum corrosion resistance. Compared to other materials, the system is much more durable and therefore more cost-effective throughout the entire cleaning and sterilisation process.