Thank you for viewing. This is a glass lid for a Fissler pressure cooker. I'm not sure if it's the part number, but it says 38-646 22-200. I don't know the size, so please purchase if you know it. The product is new and unused. The box is crushed and deformed due to long-term storage. *The knob in the image was photographed as it was packaged. Please follow the instructions and replace the knob before use. Please forgive any oversights. *Please understand that this is a used item, so please forgive any minor scratches or initial imperfections. Please purchase if you understand.