Hi NJBOB,

The Axiom Full Metal Bracket has a threaded bolt that screws into a threaded receptacle in the rear baffle of the M22s (and all of Axiom's bookshelf size speakers, including the center channel models and dedicated surrounds). So you don't have to drill any holes in the rear baffle of the M22s.

You can sort of see it in the link to this photo:
http://www.axiomaudio.com/gallery_qs8_wall.html

Regards,

Alan Lofft,
Axiom Resident Expert (Retired)