Double 15. 1  Choose dominoes with numbers or dots. 2  The number of add-on products, quality of the case and size of the dominoes determines the price of the set. 3  All of our double 15 dominoes sets are professional size. 4  A double-15 set has 136 dominoes, with the tile numbers ranging from 0 (or blank) to 15. Consider adding a double 15 scorepad to your order to make it easier to keep score Sort by: