XJ700S Front Fork Damper Rod

Trying to replace fork seals, I have all disassembled per service manual but don't have the special tool, YM-01326 to remove the damper rod securing bolt. I can see deep inside what looks like a 12 point socket that the tool would fit into , and based on what it looks like I assume a normal hex could work, however largest I have is 19mm & 3/4" which both skip inside and are not large enough. I wonder if anyone knows the dimensions of that tool and or the alternative? I have heard the head of a bolt can do same and when looking at Metric dimensions I thought maybe a M14 bolt head would fit in place? Am I totally hooped with the tool or does someone have the secret sauce on this?

Any help would be appreciated.

 

invert a spark plug socket on an extention

or a broom handle will work

The tool is to hold it you turn the allen screw

 

That worked great! Thanks, all torn down!