Detail 01
3 mm Allen wrench
The tools are 3 mm Allen wrenches.

Independent shopping perspective
This four-pack of 3 mm HexHider Allen wrenches is made for Floyd Rose locking hardware. Use one at the headstock nut when resetting fine tuners or at bridge string-lock screws during string changes. A Neodymium magnet keeps the wrench in place while you work, then lets it park on the back of the headstock by gripping a metal tuning machine. No drilling or permanent installation is required.

Strong match
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
The tools are 3 mm Allen wrenches.
Detail 02
Four wrenches are included in the pack.
Detail 03
The magnet holds the tool during use and against a metal tuning machine for storage.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It magnetically grips to a metal tuning machine on the back of the headstock.
No. The magnetic storage design needs no drilling or permanent installation.
It unlocks the headstock nut for fine-tuner resets and works with bridge string-lock screws for string changes.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.