JB, question about truss rod adjustment tool

[rocksteady]

It is hard to see, but what type of tool is used to adjust the truss rod in the neck? I can't tell if it is an allen head, and if it is is it male or female, Or is it a phillips or something else?. If it is a specialty tool, do you know where I can purchase one?

thaks,

Don

[JB]

it should be a 5mm hex nut, allen type, you can feel it behind the 1st strut.
a 5mm hex-ball driver works a treat.

cheers
jb