Classical, Flamenco guitar Machine Heads from Der Jung. This is a very classy machine head series made by Der Jung for Classical or Flamenco guitar. It includes 6 Machine heads with oval black buttons with metal plated sides, featuring a very dynamic new design. Also included are matching brass color screws for perfect installation. These machines have 35mm/120mm spacing, 18:1 Gear Ratio. The machines are made of heavy metal plated with deep engravings. The oval black buttons are made of an ebony-like material and are reinforced with inside screws for a softer and more accurate tuning.