Korena by Guitar Center
Product detailSKU #1500000397835

Graph TechRatio 6-In-Line Lefty Electric Locking Tuning Machine Heads Chrome 6 String

Graph Tech
Graph Tech Ratio 6-In-Line Lefty Electric Locking Tuning Machine Heads Chrome 6 String
1/8

Independent shopping perspective

The Korena take

For a left-handed electric guitar with six-in-line tuners, this locking Ratio set pairs string-specific gear ratios with a two-pin casing. Each string is designed to respond the same way to tuning changes, with a half-turn corresponding to one semitone. Four brushed-aluminum InvisoMatch mounting-plate sets are included, giving the installation a way to use existing screw mounting holes on most guitars. The required peghead-hole diameter is 13/32 inch (10 mm).

Graph Tech Ratio 6-In-Line Lefty Electric Locking Tuning Machine Heads Chrome 6 String product detail
Product studyGraph Tech Ratio 6-In-Line Lefty Electric Locking Tuning Machine Heads Chrome 6 String
Graph Tech Ratio 6-In-Line Lefty Electric Locking Tuning Machine Heads Chrome 6 String alternate view
Alternate view

Strong match

Who this is for

  • Installing locking tuners on a left-handed electric guitar with a six-in-line headstock.
  • Using existing screw mounting holes through the included InvisoMatch mounting plates.

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.

Graph Tech Ratio 6-In-Line Lefty Electric Locking Tuning Machine Heads Chrome 6 String construction detail

Detail 01

Orientation: left handed

The set is made for a left-handed guitar.

Detail 02

13/32 in (10 mm) required peghead holes

The peghead holes need to meet this diameter requirement.

Detail 03

39:1, 24:1, 20:1, 35:1, 20:1 and 12:1 gear ratios

The Ratio system uses a different calibrated ratio for each string.

Final check

Know before you order

  1. 01Confirm a left-handed, six-in-line tuner layout and 13/32-inch (10 mm) peghead holes.
  2. 02Review the existing screw mounting holes if planning to use the included InvisoMatch plates.
Graph Tech Ratio 6-In-Line Lefty Electric Locking Tuning Machine Heads Chrome 6 String close-up

Product questions

Before you decide

Straight answers to the questions shoppers most often ask about this product.

01Are mounting plates included?

Yes. Four brushed-aluminum sets of InvisoMatch mounting plates are included.

02What does a half turn do?

It changes the pitch by one semitone.

Reference

Full specifications

The complete catalog record, organized around the decisions musicians make when comparing gear.

1 detailsPlayability
String post length to string hole
0.910” (23mm)
2 detailsSize & weight
Peg holes diameter required
13/32" (10mm)
String post diameter
0.236" (6mm)
5 detailsOther
Category Source
detail
Tier
new
Korena Special
false
Source Id
site51500000397835
Gear ratio
39:1, 24:1, 20:1, 35:1, 20:1, 12:1