The challenge with allen wrench driving is that it needs a starter hole and driving it with an allen wrench is frustration waiting to happen.
The hooks I used were about .5 in diameter. I cut a slot in a ~.25 in socket driver, attached that to my drill and with a little technique I’m placing these without a pilot hole or a bunch of wobbling. A larger hook may require a larger socket to slot.
-Mark Thiel
Coral Spring, FL
