Shop › Aksarben Race Track Coaster Image 1 of 1 Aksarben Race Track Coaster $6.00 Price is per coaster.Each coaster is polyester with an open cell black rubber backing. The coaster is 4" Diameter x .22". Quantity: Add To Cart Added! Price is per coaster.Each coaster is polyester with an open cell black rubber backing. The coaster is 4" Diameter x .22".