This resin and pigment disc is past petri sized and graduated to Supernova. It is is about 9 inches in diameter and ½-1 inch thick. It comes with a permanent keyhole wall hanging attachment. The petri comes packaged with a certificate of authenticity. Ships fast via USPS 2 Day priority (domestic). Flat fee shipping of $5 in the USA, $15 international (per order not per item).