Old Spectrum System 96 glass fusing sheet glass. Spirit Series. OGT continues this series, but it seems to be difficult to obtain, so this glass is valuable. It can be used as regular stained glass for panel making and art projects. The surface is smooth, with no unevenness. Color: Purple / Pink / White / Clear, transparent Surface: S Smooth Size: Set of 2, approximately 12cm x 30cm and approximately 15cm x 20cm. Please check the photos. Coefficient of expansion: 96 *The color in the photos may differ slightly from the actual product depending on your viewing environment. *Long-term storage at home *This product is not eligible for combined purchase of two items.