This is calligraphy ink, new and unused, stored at home. I'm not sure when I bought it. It's recommended by the Saitama Prefectural Education Calligraphy Federation, so it's likely suitable for school-related artwork. I have multiple of the same ink. I will offer a discount on shipping if you purchase multiple items. It's a product of Kuretake. Please see the images for the size. The thickness of the ink is about 1cm. Please understand that this is a home-stored item.