SubliSLATE™ Coaster, 4" Round. Excellent bundle item with matching slate plaques. White Matte. Smooth, machined sublimatable slate, each with unique fractured edges. Excellent bundle item with matching slate plaques. Slate can vary in size by up to -0.4". (See SUSL048 for a square slate coaster.) An interesting alternative use for these coasters is to add a small easel (U4219 or U4220, sold separately) and make a mini plaque!