Detail 01
18:1 gear ratio
Provides the stated precision-tuning control.
Product detailSKU #1500000429776
GroverMid-Size Locking Rotomatics 406 Series Tuning Machines Black Chrome 3+3
1/8
Independent shopping perspective
The Korena take
Grover’s 406 Series is a mid-size locking tuner set for a 3+3 guitar headstock, finished in Black Chrome. Feed each string through its hole, pull it hand-tight, then tune: the locking cam turns first to secure the string before the post begins moving. That sequence keeps restringing direct and limits post rotation when bringing a string to pitch. The 18:1 ratio provides the set’s precision-tuning control.
Strong match
Who this is for
- Restringing a 3+3 guitar with the locking-cam procedure described by Grover.
- Players who want less than one full string-post rotation to reach pitch.
Consider the trade-offs
When to look elsewhere
- Guitars requiring a configuration other than the title’s 3+3 layout.
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
Locking cam
It rotates first during tuning to lock the inserted string before the post turns.
Final check
Know before you order
- 01Confirm your guitar uses the 3+3 configuration named in the title.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01How is a string installed?
Insert it through the string hole, pull it to tension by hand, and start tuning.
02What happens when I turn the knob?
The locking cam in the post turns first. After the string locks, the post starts turning.
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
- site51500000429776
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