Each RATIO tuning peg has a different gear ratio to achieve maximum precision when tuning each string. The central tension of each string is different, and each requires a different gear ratio to ensure perfect tuning. RATIO.Patented gear technology offers superior tuning precision, with each string having its own specific tuning gear.We have adjusted the gear ratios of each string so that each responds in the same way to any tuning adjustment. There is a direct relationship between the thickness of each string and the gear of each tuning peg to achieve highly precise tuning. Ranging from a ratio of 12:1 to 39:1, with Ratio®, one turn equals approximately one semitone change across all strings, making tuning, retuning, and open tunings easier, faster, and more intuitive.