Cardboard, backing board, silver, processing board 19 sheets of silver cardboard Compared to the "Silver Ball A" that I am selling, the thickness is slightly thinner, so it may be slightly easier to process. The surface pattern is also different. For preventing bending of documents, stickers, cards, photos, and books, as backing paper for shipping, and thick paper for preventing bending. Also, you can use it for handmade decorative backing boards, arts and crafts, processing cards and templates, etc. Similar sizes with a difference of a few millimeters will be mixed. Please understand the error of a few millimeters. Approximate size Length 290mm x Width 217mm Thickness: about 8mm for 20 sheets The surface is silver with a pattern. The back is gray. These are cut by me, so There may be cut remnants like in image 4. Please purchase only if you understand that these are handmade. Also, these are stored at home. Since they are paper, they may be warped due to humidity and temperature. Please understand and acknowledge this before purchasing. Please refrain from purchasing if you are nervous or concerned about small details. Packing will be a simple packaging method, putting them in a vinyl bag and then into an envelope or a recycled vinyl bag or paper bag. If you need a sample of the cardboard etc. that I am selling, I can include a sample, so please comment. I also sell comment cards, kraft cardboard, and orange cardboard, so please take a look if you like (^^) → #PekiFuwapaper #PackagingMaterials #ThickPaper #BackingPaper #SilverBall #BackingPaper #BackingBoard #TsumamiZaiku #PackingMaterials #Materials #ArtsAndCrafts #Crafts #Nashiji Color: Silver