Bulk Rename Utility

Hello

I'm not very practical with BRU except very simple actions.
Now I would like to extract files which contain a string 12 chars long (without spaces inside)
in any position.
Could you help me?
Very obliged. Regards
Fabio

With Filters(12) having a checkmark for 'RegEx', the "Mask" can be like...
(^| )[^ ]{12}( |\.[^.]+$)