Smaller pucks are best suited for tables that are shorter, typically nine to fourteen feet in length and are usually around eighteen inches wide; as measured on the playing surface. These tables use medium size pucks which are 2 1/8 inches wide. Conversely, the larger pucks with diameters of 2 5/16 inches are best suited for the longer and wider tables. See our guide at: http://www.shuffleboardshop.com/shuffleboard-weights.htm