This is SAKAE Technical Paper graph paper, 1mm grid, high-quality paper, 81.4g/m2, A4, bulk pack of 50 sheets x 10 books, eye color, AZB A4-11. It has been stored at home without being used. Photos 4-9 are of the actual product. As shown in photos 6 and 7, the outer bag is torn, but the contents are unopened. ★Free shipping★ We will ship via anonymous delivery (Takkyubin 60 size). If you are paying by convenience store/ATM, please leave a comment in the transaction message to let us know when you can pay. ◾️Quoted from the following site: 【Size】A4 (210mm x 297mm) 【Paper quality】High-quality paper 【Basis weight】81.4g/m2 【Ruling】1mm grid Graph size 180mm x 250mm 【Printing color】Eye color 【Quantity】50 sheets (loose) x 10 books 【Specifications】The product is the same as the general product, but it is a bulk pack by the package. 【Other】 It is an accurate paper with excellent dimensional stability developed independently, and it uses ECF (elemental chlorine-free bleaching) pulp, so it is an environmentally friendly eco-product that does not generate dioxins even when burned. The ruled lines are fine and relatively less prone to expansion and contraction, allowing for accurate recording.