Union-made carbon paper. The size is 229 x 318 mm, for double-sided writing, and the color is black. One box appears unused and weighs about 550g (including the box), and the other box is partially used and weighs about 400g. I have been storing these as I no longer use them. I will give them to someone who can use them. Thank you. - Brand: union - Product name: CARBON PAPER - Size: 229 x 318 mm Thank you for looking.