Detail 01
39:1, 24:1, 20:1, 35:1, 20:1, and 12:1 gear ratios
Each string position has its own listed Ratio gearing.
Product detailSKU #1500000398482
Graph TechRatio 3+3 Retro Tuning Machine Heads Nickel 6 String
Independent shopping perspective
The Korena take
These nickel, open-gear Ratio machine heads are built for right-handed vintage-style electric guitars using a 3+3 side-tuner layout. Their retro presentation is paired with string-position-specific gear ratios intended to make tuning adjustments respond evenly from string to string. They are made to a vintage 11/32-inch peghead-hole specification, so installation starts with a headstock measurement rather than an assumption.
Strong match
Who this is for
- Updating a right-handed vintage-style electric guitar with 3+3 side tuners and vintage-specification peghead holes.
- Guitar tuning setups that call for open, retro-looking nickel machine heads.
Consider the trade-offs
When to look elsewhere
- Modern tuners requiring a direct replacement.
- Guitars without a right-handed 3+3 side-tuner configuration.
- Pegheads that do not use 11/32-inch holes.
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
0.346 inch (8.8 mm) required peg holes
This corresponds to the vintage 11/32-inch peghead-hole specification.
Final check
Know before you order
- 01These are not a direct replacement for a modern tuner.
- 02Confirm right-handed orientation, 3+3 side tuners, and 0.346-inch (8.8 mm) peg holes.
- 03Check the 6 mm string-post diameter and 21 mm distance to the string hole.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Are these a direct replacement for modern tuners?
No. They are made to a vintage 11/32-inch peghead-hole specification and are not a direct modern-tuner replacement.
02What guitar layout are they made for?
A right-handed vintage-style six-string electric guitar with 3+3 side tuners.
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 inch (21mm)
1 detailsSize & weight
- Peg Holes Diameter Required
- 0.346 inch (8.8mm)
1 detailsOther
- Gear Ratio
- 39:1, 24:1, 20:1, 35:1, 20:1, 12:1
