Radioactive Periodic Table of Elements Plastic Glowing Coaster Set | Set of 4

Coasters that light up when you put your drink on them Perfect for the chemist in your life
Great for parties easily remember which drink is yours
Feature the atomic number and isotopic mass of the most stable or common isotope for each element
Materials: Plastic
Batteries: 8 3V CR2032 batteries (included)
Brand new,