Thank you for viewing. I am clearing out my parents' house. These are materials for stained glass that my mother used to learn. Approximate sizes: 30.5 x 25.5 cm Silver only: 30.5 x 30.5 cm Some pieces have glass number stickers attached. I am an amateur, so I cannot answer questions about the glass. Due to long-term storage at home, there may be scratches and stains that are difficult to see for an amateur. The items will be wrapped in bubble wrap for shipping, but they may break during transit. It may also take some time to ship. Thank you for your understanding and consideration.