Cork-Back Personalized Haunted Coasters - 4 X 4" Square with Rounded Corners (Set of 4) The perfect decoration and practical product for your Haunted Bar.  Size: 4 X 4 " Thickness: 0.125" thick MDF Cork Back - One Sided Comes with the Slotted Wood Coaster Stand - Mahogany Finish (2.5" x 3" size)