These are scrap pieces of plywood. This set includes six pieces, each 4mm thick and A4 size (approximately 300mm x 200mm). They are cut slightly larger than the sizes listed above, but please note that there may be some size variations. Although listed as "like new," these are unused items. As they are scraps, there may be splinters or stains. Please refrain from purchasing if you are concerned about these imperfections. Feel free to ask any questions you may have.