Schaller Machine Heads M6G - 3 Per Side - Gold M6 - the gold standard. The world's most successful tuning machine. Gear ratio 1:12 All sealed tuners are lubricated with Schaller special grease for lifetime maintenance-free service. All parts are precision-crafted and surface-finished, the self-locking drive ensures an even, delicate and steady tuning. All string posts are made of high-grade brass and fitted into the housing with utmost precision, ensuring the best possible tuning accuracy and wear resistance. Model: 3 left + 3 right Surface: Gold Buttons: 2 Ratio: 1 : 12 Bracket 180