Detail 01
15:1 gear ratio
Gives fine control over tuning adjustments.
Product detailSKU #1500000429924
GroverRoto-Grip Locking Vintage 533 Series Keystone Button Tuning Machines Nickel 3+3
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Independent shopping perspective
The Korena take
Built in a nickel vintage style with Keystone buttons, this 3+3 Roto-Grip set combines locking string retention with controlled tuning adjustment. Its sealed, lubricated gears and 15:1 ratio are intended to provide smooth, reliable operation and precise tuning control. The thumbscrew locks the string in place, helping prevent slippage during energetic playing. Grover positions these as a drop-in retrofit for many popular tuner models, making them a practical option when updating a compatible guitar.
Strong match
Who this is for
- Updating a compatible guitar with a nickel 3+3 tuner set and Keystone buttons.
- Keeping strings secured during energetic performances with the locking thumbscrew system.
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
Designed for smooth, reliable tuning action.
Detail 03
Locking thumbscrew mechanism
Holds strings in place to prevent slippage.
Final check
Know before you order
- 01These tuning machines are described as retrofitting many popular tuner models.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What button style does this set use?
It uses Keystone buttons.
02Are these locking tuners?
Yes. A thumbscrew mechanism locks each string in place.
