I have 3 Edensound Terracones available. These polymer/brass feet are known to be great for VPI turntables, but I used them for speaker feet with good effect. I used them without the studs and they were great. These are very nicely made. Technically, I guess this size is known as a 1/2 Stone. They are 2" wide and 1" tall, with threaded brass inserts in the faces. They list for $95 each.
Info here:
http://edensoundaudio.com/FAQ_TerraStone.htmlI have 3 which have an M6 thread, and include pointed spikes and 2 studs each (picture shows 2 of 3):

I will sell these 3 for $85.
I will pay shipping to the continental US at my price.
Thanks for having a look.