These are mosaic tiles from several decades ago. They are unused and were originally in sheet form, but the sheets have deteriorated, and the tiles have come off. Some have adhesive or sheet material attached to the surface, but they can be used without issue after cleaning. Thickness is approximately 4mm. Please be aware that there are variations in size. ☆☆Condition☆☆ Due to long-term storage, there are scratches, chips, stains, and dust, even though they are unused. Please understand that these are old items and will be sold as-is. ☆☆Shipping Method☆☆ Yu-packet. Packaging will be done using used materials. It is often not possible to combine multiple Yu-packet shipments due to weight restrictions. Thank you. ^⁠_⁠^ #Totoina Yamada Tile