The vendor did not ship the 4mm by 8mm product following purchase on his website last month on phx42.com.
I have waited for weeks with no response by email on the shipment.
Because attempts to reach out did not get a reply, I strongly caution against purchasing his goods.
I assume his Etsy page of Phoenix42Creations on https://www.etsy.com/shop/Phoenix42Creations of reviews are fraudulent, or from another time when he followed through on order fulfillment.