10 pack Mega Marbles Opaque Yellow Marbles. Colors and size may vary marble to marble. 16mm / 5/8" 10 pack Mega Marbles Opaque Yellow 16mm / 5/8" Marble. Great for Chinese Checkers (particularly older boards), vase fillers, and table decorations. Machine marbles may vary slightly in size and color from one marble to the other. Choke Hazard and should not be used by children under 5yrs. Other varieties and display options available in our other listings....