Further information:
Harmonix Beautone TU-666zx tuning feet in a set of 4.
These feet are the bigger adjustable version in their range. height can easily be adjusted. They can be used for support any electronic equipment even as feet to turntable. Made of combination of ebony and brass. No soft damping material such as sorbothane that can dampen the music. Plenty of knock offs but this is the real deal.
Come with original packaging. Good condition with a few scratches on the top surface.
Retail close to $1000.
Harmonix by Combak corporation of Japan have been around for a very long time. Also the maker of JVC XRCD and Remiyo dac. Google for further information.
https://positive-feedback.com/Issue14/harmonix.htm
https://highfidelity.pl/@main-564&lang=en