The GraphTech Ratio Tuned Machine Heads are the first of their kind, integrating varying string gauges into the tuning process. By balancing individual gear ratios for each string, they significantly streamline tuning. No more over-shooting the G string or excessive twisting on the high E string. With Ratio, each half key turn results in a one semitone change across all strings, ensuring quicker and more precise tuning on every string.