Premium 1:15 gear ratio classical guitar tuning pegs with internal gears ensures precise tuning stability and smooth operations for professional musicians. Crafted with metal construction, and seamless compatibilitys with standard classical guitars. Ideal for luthiers, guitar technicians, or enthusiasts seeking replacements for worn out or outdated machine head. Perfect for upgrading vintage instruments, repairing damaged tuning systems, or enhancing playabilitys during studio and live . Three in line configuration with left/right orientation adapts effortlessly to various string winding preferences while maintaining aesthetic appeal.