Detail 01
18:1 gear ratio
Provides the smooth, precise tuning adjustments described for this set.
Product detailSKU #1500000452239
GroverMini Roto-Grip Locking Rotomatics 505 Series Tuning Machines - Chrome 3+3
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Independent shopping perspective
The Korena take
Grover’s chrome Mini Roto-Grip 505 tuners combine a compact housing with a locking string-holding system and an 18:1 ratio for controlled tuning adjustments. They are intended for inline applications, 12-string guitars, and instruments with smaller headstocks. For an existing guitar using non-locking Grover MINI 205 tuners, these are positioned as a direct replacement, making them a focused hardware upgrade rather than a redesign of the headstock layout.
Strong match
Who this is for
- Replacing non-locking Grover MINI 205 tuners with the locking Roto-Grip system.
- Inline guitar applications, 12-string instruments, or guitars built around smaller headstocks.
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 Roto-Grip system
Secures the strings at the tuners for improved tuning retention.
Final check
Know before you order
- 01Direct drop-in replacement status is specified for the non-locking Grover MINI 205 model.
- 02Confirm that your instrument is an inline application, a 12-string, or has a smaller headstock.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What Grover tuners do these replace directly?
They are specified as a direct drop-in replacement for non-locking Grover MINI 205 tuning machines.
02Do these use a locking string system?
Yes. The Roto-Grip locking system holds strings in place.
