Deco Gray Opalescent Frit Balls - 90COE - Made from Bullseye Glass Our New Hampshire Craftworks 90COE Frit Balls are made from Bullseye Glass. This package contains 1/2oz of product (approx. 50-75 pieces total). Sizes range from approx. 1/2mm to 7mm depending on package. Each package varies in quantity and size variation from bag to bag. Our Frit Balls are pre-fired and have struck to their final color. The frit ball color will not change even if they are re-fired a second time. These awesome little frit balls are flat on one side so they can be tack or full fused without sliding, or can simply be used as is to enhance jewelry or other glass pieces. Great for mosaics too!