Can you recommend the best tool for adjusting the truss rod?

[Dunadan1]

Hello and best wishes!
Quick Question:
Can anyone recommend the best tool for adjusting the truss rod?
Mica posted: "¼ inch wrench" -   but I'd like a more detailed recommendation.
That is, would you be so kind as to post an amazon link and /or a picture of the tool you use to adjust the truss rod?
That would be greatly appreciated!!!!!
Thanks, Mark

[David Houck]

There's a picture of the wrench in the Alembic store.

https://alembic.stores.yahoo.net/trussrodwrench.html

[Dunadan1]

Thank you very much!