90 COE Made from Bullseye Glass! Compatible with many 90 COE glasses! * This Murrini diameter varies between 5mm and 12mm! Bags come in assorted sizes! * 1/4oz averages between 20 and 45 pieces each bag. * Primarily used in warm glass kiln forming, but can be used as is in other projects such as mosaic designs as well! * Wonderful, interesting and dynamic new Millefiori for all your warm glass kiln projects!