Detail 01
Lubricated 16:1 gear ratio
Provides the precise, efficient tuning control described for the Imperial 152 Series.
Product detailSKU #1500000429469
GroverFull-Size Imperial 152 Series Tuning Machines Nickel
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Independent shopping perspective
The Korena take
Grover’s nickel Imperial 152 Series tuning machines pair large butterbean buttons with a lubricated 16:1 gear ratio for controlled tuning adjustments. The 25/64-inch post hole and 22.2 mm post length are intended for most standard guitar headstocks, making them a practical option when replacing compatible tuners. Their full-size Imperial styling gives the headstock a vintage-oriented look while keeping the focus on precise, smooth tuning operation.
Strong match
Who this is for
- Replacing compatible tuners on a standard guitar headstock while retaining a full-size, vintage-styled appearance.
- Players who want the finer adjustment control provided by a lubricated 16:1 gear ratio.
Consider the trade-offs
When to look elsewhere
- Headstocks that do not accept a 25/64-inch post hole and 22.2 mm post length.
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; 22.2 mm post length
These measurements are the key fit points for use on most standard guitar headstocks.
Final check
Know before you order
- 01Confirm that the guitar headstock accepts a 25/64-inch post hole and 22.2 mm post length.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can these replace tuners on a standard guitar headstock?
They are designed as a drop-in replacement for most standard guitar headstocks, using a 25/64-inch post hole and 22.2 mm post length.
02What tuning ratio do these use?
They use a lubricated 16:1 gear ratio for precise tuning adjustments.
