The U99-18 Series is beautifully designed for precise tuning with the classic styling and multiple interchangeable button options. These high-end ukulele machine heads come mounted on a die-cast plate with a .827” (21mm) long post.

• Open gears
• 18:1 gear ratio
• 22/64” post hole
• Post length to hole: 16mm
• Overall post length: 21mm
• Weight per pc/per set: .9oz/3.6oz
• Max. string gauge: .074”
• Hardware included (bushings, screws)
• Drop-in replacement for: U98-18 Series

For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.