Detail 01
18:1 gear ratio
Supports smooth, accurate tuning adjustments.
Product detailSKU #1500000429767
GroverMid-Size Rotomatics 305 Series Tuning Machines Nickel 6+6
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Independent shopping perspective
The Korena take
Grover’s nickel Mid-Size Rotomatics 305 set combines a 6+6 layout with compact tuning machines intended for smaller headstocks. The 18:1 ratio supports smooth, accurate adjustments, while sealed, lubricated gears are designed to resist slipping and support long-term use. With 22.4 mm posts that accommodate most string gauges, it is a space-conscious hardware option for players who want precise tuning without adding unnecessary bulk at the headstock.
Strong match
Who this is for
- Guitar setups with smaller headstocks that need a compact 6+6 tuning-machine arrangement.
- Performance use where steady tuning and fine adjustment are priorities.
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
22.4 mm post length
Accommodates most string gauges.
Detail 03
Sealed, lubricated gears
Designed to prevent slipping and support longevity.
Final check
Know before you order
- 01Confirm that your guitar uses a 6+6 layout and has a smaller headstock.
- 02Check that the 22.4 mm post length suits your string gauge.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What tuning ratio do these machines use?
They use an 18:1 gear ratio for smooth, accurate tuning.
02Are the gears sealed?
Yes. The gears are sealed and lubricated.
