Is there any such tool?

["Theodore R. Harlan" <trharlan@one.net>]

Replaced the CQ roof mount amplified antenna. Pretty easy. As indicated,
access is simple from the rear dome light.

The headliner falls about three inches below the antenna access. I can't
tighten the 17 mm bolt at all. Can't even really put pliers on it.

What I need is a nut driver with two sides removed. To paraphrase, a
nutdriver with a line wrench head. Or a line wrench with a 90 degree
bend.

Does this tool have a name? Do I need to find some really cheap tools to
which I can take a Sawzall?

Why does my local hardware professional look at me like I'm a martian?