Detail 01
18:1 gear ratio
Enables precise adjustment of string pitch.
Product detailSKU #1500000429392
GroverSuper Rotomatics With 18:1 Gear Ratio 109-18 Series Tuning Machines Gold
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Independent shopping perspective
The Korena take
Finished in Gold, these Grover Super Rotomatics 109-18 tuning machines use an 18:1 gear ratio for measured pitch adjustment. The lubricated gearing is protected inside sealed gearboxes. For replacement work, the key checks are the listed 25/64-inch post hole and 28.2 mm post length; when those align with the instrument, the set is described as a drop-in 109-18-series option.
Strong match
Who this is for
- Replacing compatible 109-18-series tuners while selecting Gold-finish guitar hardware.
Consider the trade-offs
When to look elsewhere
- Instruments with tuner dimensions different from the stated 25/64-inch post hole and 28.2 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
Sealed gearbox
Protects the lubricated gears inside the tuner.
Final check
Know before you order
- 01Compare the required post-hole size and post length with the instrument before installation.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What are the specified post dimensions?
The post hole is 25/64 inch, and the post length is 28.2 mm.
02What finish is this 109-18 set?
It is Gold.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Gold
