Detail 01
25/64-inch post hole
Accommodates heavier-gauge strings.
Product detailSKU #1500000429371
GroverRotomatics With 18:1 Gear Ratio 102-18 Series Standard Button Tuning Machines Nickel
1/2
Independent shopping perspective
The Korena take
Finished in nickel, these Grover Rotomatics 102-18 Series standard-button tuning machines use a sealed, lubricated 18:1 gear ratio for controlled pitch adjustment. The oversized housing incorporates a 25/64-inch post hole for heavier-gauge strings, and the 28.2 mm post gives extra winding room during string changes. Their countersunk tension screw lets you tailor the feel, with smooth, backlash-free tuning action described by the manufacturer.
Strong match
Who this is for
- Guitar setups using heavier-gauge strings that need the stated 25/64-inch post hole.
- Restringing work where a 28.2 mm post's added winding room is useful.
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
28.2 mm post
Provides more winding room.
Detail 03
Countersunk tension screw
Allows adjustment of tuning tension.
Final check
Know before you order
- 01Check that your guitar's requirements suit the 25/64-inch post hole and 28.2 mm post.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Are these suitable for heavier-gauge strings?
The oversized housing includes a 25/64-inch post hole that accommodates heavier-gauge strings.
02Can the tuning tension be adjusted?
Yes. The countersunk tension screw lets you adjust it to your preference.
