Video by Graph Tech Guitar Labs via YouTube
Source
[wpas_products keywords=”Graph-Tech-Guitar”]
RATIO Machine Heads are a high performance transmission for your guitar. The core tension of every string is different, each requiring a unique gear ratio to deliver tuning perfection. RATIO’s
patented gear technology delivers premium tuning performance every time by giving each string its own specific tuning gear.
https://graphtech.com/pages/ratio-machine-heads