Stop Sine Tile Coaster From now on, it's square waves and sawtooths only. Stop sine before it stops you with this senseless (yet seemingly smart) design. Product InformationLiven up any room or party with our fun, hip tile coasters, measuring 4.25" x 4.25" and 1/6-inch thick. Images are applied with a polyester resin that accepts dye as part of the coating. Four felt pads protect your furniture from scratches. Dishwasher safe. Not for use with abrasive cups and mugs. | 
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