Double 12 Mexican Train Number Dominoes to Go Travel Size with Zip Up Case, Hub & 8 Domino Trains Double 12 Mexican Train Number Dominoes 91 Fun Size Double 12 Numbered Dominoes. Tile Size: 1.54" x 0.76" x 0.25" Includes a Zip Up Case, a Hub and 8 Trains Convenient on the Road with Great Replay Value Fun for the Whole Family