dual plug head spanner

has anyone tried a none guzzi tool that gets into the small inner plug?

I found this one and wondered if it would be thin enough to get at the plug.
Sealey AK6557 Spark Plug Socket 16mm Thin Wall 3/8"Sq Drive

I use a tube spanner, formally called a box spanner  :slight_smile:

:question: …Hmmm Box spanner, I think i have a few in the junk boxes that I have not seen for a few years. I will have a rummage.