Hansen The Prince V2 - Question

I’m hoping someone can help me. I just purchased a pair of Hansen The Prince V2 that should be delivered in a week or so. I wanted to get Herbies feet to replace the spikes before the speakers got here but I have no idea the size of the threads. I reached out to Hansen Audio (via e-mail because they appear to have no phone) but got no response. I’m guessing M8 or M10 but that’s just an educated guess. Of course I can wait until the speakers arrive but they’re such a ***** to setup (each in excess of 200lbs) that I hoped to have to do this just the one time.
Thanks.
Ian