Detail 01
18:1 gear ratio
Allows precise tuning changes for stable tuning and accurate intonation.
Product detailSKU #1500000429858
GroverProfessional Mandolin Vintage A Style 409 Series White Button Tuning Machines Chrome
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Independent shopping perspective
The Korena take
Chrome hardware and white buttons give these Grover 409 Series Vintage A Style tuning machines a clean, retro-oriented look. Their exposed worm-under gears, die-cast plates, and bell-top button screws continue that design across the set. An 18:1 ratio supports careful pitch adjustments for stable tuning and accurate intonation. The published mounting dimensions are a 25/64-inch post hole and 30.3 mm overall post length, with a secure fit described for most mandolins.
Strong match
Who this is for
- Mandolin installations using a 25/64-inch post hole and 30.3 mm overall post length.
- Controlled tuning adjustments with an 18:1 gear ratio and worm-under open gears.
Consider the trade-offs
When to look elsewhere
- Mandolins outside the published 25/64-inch post-hole and 30.3 mm post-length measurements.
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
25/64-inch post hole; 30.3 mm overall post length
These are the stated mounting measurements to verify against your mandolin.
Final check
Know before you order
- 01Check that your mandolin uses the stated 25/64-inch post hole and 30.3 mm overall post length.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What mounting measurements are listed?
The post hole is 25/64 inch, and the overall post length is 30.3 mm.
02What finish and button color does this version have?
It has chrome hardware with white buttons.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- White
