Classical, Flamenco guitar Machine Heads “Dragon Brass ” from Der Jung – . This is the top of the line machine head series made by Der Jung for Classical or Flamenco guitar. It includes 6 Machine heads with oval Black pearl buttons with brass 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 brass with deep engravings. The oval black buttons are made of black pearl material and are reinforced with inside screws for a softer and more accurate tuning .