Detail 01
18:1 gear ratio
Supports the product’s specified precision tuning adjustments.
Product detailSKU #1500000429895
GroverRoto-Grip Locking Rotomatics 502 Series Standard Button Tuning Machines - Black Chrome
1/8
Independent shopping perspective
The Korena take
For a compatible guitar, these 502 Series Roto-Grip tuning machines combine standard buttons with a black chrome finish and a locking-string thumbscrew. The thumbscrew mechanism secures the string in place during restringing. Sealed, lubricated gears with an 18:1 ratio are specified for precise tuning control and stable intonation. Because the set is described as fitting many industry-standard tuner formats, its key practical check is the instrument’s current tuner layout before an upgrade is started.
Strong match
Who this is for
- A compatible tuner upgrade that uses standard buttons and black chrome hardware.
- Restringing setups where the player wants strings secured by individual thumbscrews.
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
Sealed, lubricated gears
The gears are built as a sealed, lubricated assembly.
Final check
Know before you order
- 01Verify that the guitar accepts this drop-in design for industry-standard tuners.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01How do these tuners hold the strings?
Each tuner uses a thumbscrew mechanism to lock its string in place.
02What finish is this version?
Black chrome.
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
- site51500000429895
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