Double 6 Tournament Black Dot Domino Set Tournament Size Dominoes. Largest, thickest commercially available. Double Six Set (meaning 28 dominoes). Highest Number is six/six. Solid white, smooth dominoes with Recessed long-lasting black dots. Convenient, textured, almost black, snap-close, adequate, vinyl storage case. Case measures 8 x 5 x 1.25 inches. Great for tournaments, clubs, bars, taverns, youth centers