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 pearly 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 pearly buttons are made of an “ Pearl like” material and are reinforced with inside screws for a softer and more accurate tuning .