COE 90 Big Size Fusible Glass Fine Frit, for DIY Creative Fused Glass Art Pieces, Dark GreenSize: about 2.7~5.2mm wide, about 30g/bag.Glass fusing is the joining together of pieces of glass at high temperature, usually in a kiln. Operating Temperature: it is usually done between 820â and 830â. Usage: make beautiful fused glass and slumped to art pieces.