Detail 01
18:1 gear ratio
Enables precise tuning adjustments.
Product detailSKU #1500000429806
GroverProfessional Mandolin Vintage F Style 409 Series Pearloid Button Tuning Machines Gold
1/8
Independent shopping perspective
The Korena take
Grover’s gold Professional Mandolin Vintage F Style 409 Series machines combine pearloid buttons and exposed vintage-style gears with tuning-focused hardware. The 18:1 ratio and adjustable worm gears are intended to help dial in accurate pitch across different playing styles. A die-cast mounting plate keeps the gear assembly aligned. For a mandolin being refreshed with gold hardware and pearl-style buttons, these are designed to install directly into most mandolins; screws are supplied.
Strong match
Who this is for
- Refreshing a mandolin with gold hardware, pearloid buttons, and vintage-style open gears.
- Mandolin tuning adjustments where an 18:1 ratio and adjustable worm gears are wanted.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Adjustable worm gears
They are intended to support accurate tuning across playing styles.
Detail 03
Die-cast mounting plate
Keeps the gears properly aligned.
Final check
Know before you order
- 01These are designed to drop into most mandolins.
- 02Screws are included.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What finish and button style do these use?
They have a gold finish with pearloid buttons.
02Are mounting screws supplied?
Yes, screws are included.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
4 detailsOther
- Category Source
- detail
- Tier
- new
- Korena Special
- false
- Source Id
- site51500000429806
Worth comparing
1 of 12
