Sierra Towers treaded for speaker spikes?

Couldn't find any info on this. I have my order in for a pair, so I've been looking but I don't see any pics of the Towers with floor spikes, so I figure they don't come with them, but does the base have threaded inserts to accommodate 3rd party spikes?

If they do have the inserts, what have people purchased that fits?

thx!

The bases (called "plinths") are threaded for spikes, and spikes ARE included with them.

That's great, thanks for confirming!