Detail 01
5/16-inch wrench size
Matches the size identified for this version of the Grover truss rod wrench.

Independent shopping perspective
Built for 5/16-inch truss-rod adjustments, this black Grover wrench is a focused setup tool for changing neck relief in small increments. It gives you a direct way to refine the neck curve around your preferred playing style and string gauge. Keep it in a guitar-maintenance kit for relief adjustments during setup work or for a quick pre-gig or recording-session tweak.

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
Matches the size identified for this version of the Grover truss rod wrench.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
This version is 5/16 inch.
It is used to make truss-rod adjustments that control neck relief.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.