Hmmmm, you’re right… the FMB & FMCB are not currently listed. These were very high quality bracket but also very expensive. I suspect they weren’t a big seller.

In all my applications (M3ow’s hanging from the ceilings on FMBs & M3’s from ceiling on FMCBs) I needed special inserts added to my speakers to use them.
Which ended up costing Axiom a couple of round trips to get right. Perhaps another reason to drop them.