Umbra Torque Coasters, Assorted, Set of 4 Four assorted Torque coasters by Umbra Constructed of solid cast metal, finished in polished chrome and enamel Stackable, anti-slip bottom, protects surfaces from condensation, supports a wide variety of glass sizes, felt ring on base prevents scratching 4 Inch by 4 Inch by 5/8 Inch Designed by Alan Wisniewski and Matt Carr