Detail 01
Staggered string-post lengths: 21 mm, 20 mm and 19 mm
The set uses staggered posts, eliminating the need for a string tree.
Product detailSKU #1500000397836
Graph TechRatio 7-In-Line Electric Locking Tuning Machine Heads With Staggered Posts Black 7 String
Independent shopping perspective
The Korena take
Designed for a right-handed electric guitar with seven-in-line tuners, this black locking Ratio set uses staggered posts and removes the need for a string tree. Its calibrated, string-specific gear ratios are arranged so every string responds consistently to a tuning adjustment; a half-turn equals one semitone. The two-pin casing can be installed on its own or used with the four included brushed-aluminum InvisoMatch mounting-plate sets to work with existing screw holes on most guitars.
Strong match
Who this is for
- Outfitting a right-handed seven-string electric guitar with seven-in-line locking tuners.
- Guitars where staggered posts are wanted to eliminate the need for a string tree.
- Using existing screw mounting holes with 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.
Detail 02
13/32 in (10 mm) required peghead holes
The peghead holes need to meet this diameter requirement.
Detail 03
48:1, 39:1, 24:1, 20:1, 35:1, 20:1 and 12:1 gear ratios
The Ratio system assigns a calibrated ratio to each of the seven strings.
Final check
Know before you order
- 01Confirm the guitar is right-handed, uses seven-in-line tuners, and has 13/32-inch (10 mm) peghead holes.
- 02Review existing screw mounting holes if using the included InvisoMatch plates.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Does this set require a string tree?
No. Its staggered posts eliminate the need for a string tree.
02Are mounting plates included?
Yes. Four brushed-aluminum sets of InvisoMatch mounting plates are included.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
2 detailsPlayability
- String Post Diameter
- 0.236 inch (6mm)
- String Post Length to String Hole
- 0.827” (21mm) - 0.787 inch (20mm) - 0.748 inch (19mm)
1 detailsBody & build
- Color
- Black
1 detailsSize & weight
- Peg Holes Diameter Required
- 13/32 inch (10mm)
1 detailsOther
- Gear Ratio
- 48:1, 39:1, 24:1, 20:1, 35:1, 20:1, 12:1
