Mandolin 4L/4R Machine Heads,Gold Finish,Brown Button,#436G-SBR

• Gear Ratio: 14:1 Gear Ratio 
• Required Neck Mahince head Hole Size: 0.327"(8.3mm),if you need the 0.354"(9mm) ferrule,and you can order it separeately from our store.
• Ferrule and screws are inclued.
  
  Pls find the measurement in the above attached photo.