I have put together a 6 coaster set with a hexagon and bee themed design. The first plate has 3 different coasters that only need one color. They are 5mm thick. The second plate has 3 that can have two colors. The back section on each is 3mm, and the front section on each is 3mm for a total of 6mm thick coasters. You can print just one plate, or them all. I hope you are as buzzed about these as I am! (sorry, bad joke)