Detail 01
18:1 gear ratio
Supports accurate tuning adjustment.
Product detailSKU #1500000429797
GroverProfessional Mandolin Vintage F Style 409 Series White Button Tuning Machines Chrome
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Independent shopping perspective
The Korena take
These chrome Grover Vintage F Style 409 Series machines combine white buttons and open gears in a vintage worm-under layout. An 18:1 ratio supports accurate tuning adjustment, while the die-cast plate adds stability. With 25/64-inch post holes and a 30.3 mm overall post length, the key measurements are available when matching them to a mandolin neck during setup.
Strong match
Who this is for
- Mandolin setup where 25/64-inch post holes and a 30.3 mm overall post length match.
- Players seeking white-button machines with a vintage worm-under appearance.
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
30.3 mm overall post length
A measurement to compare when matching the machines to a mandolin neck.
Final check
Know before you order
- 01Check the 25/64-inch post-hole size and 30.3 mm overall post length against your mandolin.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What color are the buttons?
The buttons are white.
02What is the overall post length?
The overall post length is 30.3 mm.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- White
