These chips are 39 mm diameter casino sized chips and are 11.5 grams in weight. They are produced from a composite resin and an insert that gives them the weight feel of a heavy casino quality chip. The detail on these chips is great. The dice and stripes around the chip as well as the detail on the edge of the chip add to the great appearance. NOTE: YOU WILL RECEIVE 10 DIFFERENT CHIPS (1 OF EACH COLOR).