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Innovations: Patented Bearing


Worm gear, worm shaft and string roller are ball-bearing mounted

  • Free-moving
  • Precise control
  • Reacts to smallest turns
  • You “feel” the string


All parts are mounted with screws

  • Precise adjustment
  • No stays in the tuners
  • Easy to service
  • Long service life


Surfaces are not treated

  • Aging with “patina”


Easy retrofitting for almost all concert guitars!