Ah, so the switchcraft inline XLR insert will fit into an SM58 etc?
I believe that is the solution.
Thanks, we don't really do that much Switchcraft in the UK.
Just for interest, this is to convert a Shure 55 with a switch, so that via a breakout box, the switch operates the talkback switch on the desk remotely.
So the guy can lay on the couch at the back of the control room, directing the talent.
View attachment 144662