Detail 01
3+3 configuration
The set is arranged as three tuning machines on each side.

Independent shopping perspective
Grover’s Mini Roto-Grip 505 Series in gold is a compact locking tuner set arranged 3+3. Its 18:1 gear ratio is designed for smooth adjustment and precise tuning stability, while the Roto-Grip mechanism secures each string for better retention. A slightly larger housing makes room for that locking system without abandoning the compact format. For an existing instrument or a new build, it provides a direct upgrade path from non-locking Grover MINI 205 tuning machines.

Strong match
What matters in use
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 01
The set is arranged as three tuning machines on each side.
Detail 02
Holds strings securely to improve tuning retention.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
They use an 18:1 gear ratio for smooth adjustments.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.