Detail 01
18:1 gear ratio
Supports smooth tuning adjustments.

Independent shopping perspective
Configured 3+3 and finished in nickel, these Grover 505 Series Mid-Size Roto-Grip tuners bring a locking system to a compact format. The 18:1 gearing is intended for smooth adjustment and precise tuning stability. Their slightly larger housing accommodates the Roto-Grip mechanism, which holds strings securely for improved tuning retention. They are positioned for upgrades or new builds where a lightweight, sturdy tuner set and a direct replacement for non-locking Grover MINI 205 machines are needed.

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
Supports smooth tuning adjustments.
Detail 02
Provides room for the locking Roto-Grip system.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It holds strings securely in place to improve tuning retention.