Detail 01
XT coating
Each string is coated to provide corrosion resistance and consistency.

Independent shopping perspective
D'Addario XT .009–.042 Light strings are a coated electric-guitar set using a NY Steel core and nickel-plated steel wrap wire. The XT coating is applied to every string to provide corrosion resistance and consistency while preserving the natural feel of an uncoated string. The nickel-plated wrap is described as producing a bright, focused sound. Color-coded ball ends provide a useful visual reference during a restring, and the corrosion-resistant packaging helps keep the set fresh through storage and transport.

Strong match
Consider the trade-offs
What matters in use
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 01
Each string is coated to provide corrosion resistance and consistency.
Detail 02
These materials make up the strings’ stated core and wrap construction.
Detail 03
This is the supplied gauge designation.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
Yes. XT coating is applied to each string for corrosion resistance.
They are electric guitar strings.
Yes. The set uses color-coded ball ends for quick, accurate string changes.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.