Detail 01
18:1 gear ratio
Supports precise tuning adjustments.
Product detailSKU #1500000429857
GroverProfessional Mandolin Vintage A Style 409 Series Black Button Tuning Machines Gold
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Independent shopping perspective
The Korena take
Grover’s 409 Series Vintage A Style mandolin tuning machines pair a gold finish with black buttons. The 18:1 ratio supports fine tuning adjustments for accurate pitch and consistent intonation. Open worm gears, die-cast plates, and bell-shaped button screws give the hardware its period-inspired look. Designed to drop into most mandolins, they suit a component upgrade where precise tuning and vintage-styled details matter together.
Strong match
Who this is for
- Fine 18:1-ratio tuning adjustments with open-gear, vintage-styled mandolin hardware.
- Upgrading most mandolins with a drop-in 409 Series tuning-machine set.
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
Open worm gears with die-cast plates
Brings exposed gearing and vintage-inspired visual detail to the headstock.
Final check
Know before you order
- 01These tuning machines are described as a drop-in fit for most mandolins; confirm your instrument accepts them.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What is the gear ratio?
The 409 Series uses an 18:1 gear ratio for precise tuning adjustments.
02Will these fit my mandolin?
They are described as dropping into most mandolins.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Black
