Detail 01
Auto-trim
The post shears the excess string as you wind, so no wire cutters and no sharp tail ends.
Product detailSKU #1274034478350
D'AddarioAuto-Trim Tuning Machines/3 Per Side Black
Independent shopping perspective
The Korena take
Locking-style replacement tuners for 3+3 headstocks, with an auto-trim mechanism that cuts the string end as you tune up.
Strong match
Who this is for
- Players changing strings often who want no coiled string ends
- Les Paul, SG and dreadnought-style headstocks with 3 tuners per side
- Guitars with black hardware you want to keep matched
Consider the trade-offs
When to look elsewhere
- Six-in-line headstocks like Strat and Tele — wrong layout
- Anyone unwilling to check hole spacing and shaft diameter first
- Players who just need a stable tune from a setup, not new tuners
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
3 per side
Fits headstocks with three tuners on each side. Left and right units are handed, not interchangeable.
Detail 03
Black finish
Matches black bridge and tailpiece hardware. Will look off against gold or nickel parts.
Detail 04
Machine-head replacement
String stays clamped at the post, so tuning holds better after bends and heavy strumming.
Detail 05
$129.99 set
A full six-tuner upgrade, priced above stock tuners on most mid-tier guitars.
Final check
Know before you order
- 01Measure existing peghole diameter and screw spacing before ordering — retrofits are not universal
- 02Headstock may need bushing changes or a new screw hole
- 03Strings, tools and a setup after the swap are on you
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will these fit my Strat?
No. A Strat headstock is six-in-line. This set is three tuners per side, for headstocks like a Les Paul or most acoustics.
02Do I still need string cutters?
Not for the tuner end. The auto-trim mechanism cuts the excess string as you bring it up to pitch.
03Does this come with everything to install?
Plan on checking fit yourself — peghole size, bushings and screw holes vary by guitar, and some retrofits need drilling.
04Will this keep my guitar in tune better?
It helps. Clamping the string at the post removes slack windings, which is where a lot of tuning drift comes from.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Black
