The Coasters are about 3.94 inches (100 mm) in diameter wide and about 2mm thick. For more grip i got suitable cork coasters to stick on the bottom of the coasters with 1mm thickness. They are for example available by Amazon. 

I added three plates, one with both head variations and two with the single ones. 

An Storage for the Coasters is also available, just click here: Storage for Coasters

Feel free to leave a comment or review if you like the model or have any suggestions for improvement. I’m constantly working on improving my models. :)