These are scrap pieces of plywood. This is a set of 20 sheets, 4mm thick, A4 size (approximately 300mm x 200mm). They are cut slightly larger than the above size, but please understand that there may be some size variations. The unit price is 75 yen per sheet, which is a better deal than the 6-sheet set. Although listed as "near new," these are unused. As they are scraps, there may be splinters or stains. Please refrain from purchasing if you are sensitive to these issues. If you have any questions, please feel free to ask.