This is a super tuner recognized as such around the world. They use a 1:21 gear ratio: a world first.

The SG510 series has evolved through improvement without compromise at any stage and come equipped with a considerable application of high-technology as standard. With the improvement of precision fitting gears, marvelous touch on playing—they have gained a considerable reputation and are trusted as the No.1 machine head by many musicians all over the world.

• 21:1 tuning ratio for super fine tuning accuracy
• Large White Pearl Buttons
• Set w/ 6 tuners for 3x3 configuration
• MG-T (Traditional Style) Thumbscrew-style locking tuner. It is simple and easy
• ROCK-SOLID posts prevent the rocking of string post
• LUBRI-PLATE With a Solid Lubrication Coat, oil has been eliminated keeping the lubrication where it is needed for the life of the tuning machine heads.
• 0 degree offset mounting hole (6 o'clock)
• 13/32" [10mm] headstock holes required
• Includes bushings and screws
• Made in Japan