That appears to be the puck from the EAT C-Sharp table. They are manufactured in the same building as Pro-ject tables. Here is another alternative I am looking at too for my Xtension 10.
https://pro-jectusa.com/product/record-puck-signature-10-12/
Oz
https://pro-jectusa.com/product/record-puck-signature-10-12/
Oz