While they bring back some seventies style and detailing, this complete set of Schaller ST6 Series 6-In-line Tuners boast some ultra-modern tuning accuracy, upgrading the stability of '70s-era Fender Stratocasters or Telecasters. The vintage-style buttons are supported by a tight 14:1 tuning ratio, upping the precision and, since each machine head features a standard 27 millimetre screw-distance, they're easily installed. This pack also comes bundled up with all of the necessary mounting screws, bushings and washers.