Very easy, fast and precise tuning. Transmission ratio 8.5:1, compared to a regular tuner. Made from High-Tech composite material and lightweight alloy. The installation of the tuners is performed like regular tuners, without adhesive, just by pressing into its place. Self-locking inside the tuner, the string does not lose tension. No signs of wear on the tuner or peg hole (the tuner does not thread, therefore there is no friction). Climate and humidity do not affect. Design, size, colour and consistent quality. The package contains 4 tuners.