This is a Dominoes Color Dot Jumbo Tiles Double 12 Set. Red, orange, yellow, green and blue dots for easy identification! There are five major domino sets avialable commercially, Double 6, 9, 12, 15 and 18, and Double Twelve is popular in that it can involve several players. Double 12 Dominoes has 91 tiles and 1092 pips (points). The Jumbo Tiles measure about 57mm x 28mm x 12.5mm, bigger than both Standard and Professional Tiles.