4 Inch Coaster Diamond Plate (2 Coasters) with soft base prevents watermarks on your trailer countertops or tables created by drink glasses or cups. Styled with diamond plate aluminum tread, in Streaming Silver, Excella Blue or Ruby Red finishing and designed to last a lifetime. The Airboard-inspired 4 Inch Coasters will compliment your trailer, home or workshop with smooth tumbled edges. These coasters highlight your favorite drinks or liquid refreshments after a great day of traveling or camping. Made in the USA and shipped directly to your door. Give the 4 Piece Coaster set of 4 to family, friends, or Airstream Trailer owners as a gift or add a pair to your Airboard or Streamlight order.