D'Addario Auto-Trim Tuning Machines, 3 + 3 Setup, Black

• 6 High quality precision tuners that automatically cut excess string while the guitar is tuned; 3 + 3 format
• Individual string clamps securely hold the string in the tuning machine, avoiding the need for multiple wraps around the post
• Excellent for tremolo use and other demanding applications
• Precise 18:1 gearing ratio for smooth, exact tuning with minimal string slippage
• Limited lifetime guarantee