Photo is current. The Ozuku Asagi is a full size version of the very popular "Koppa" that we also sell. It has a very fine grain and is very hard. This stone is an excellent finishing stone and works quite well with razors and high end kitchen knives. Mr. Imanishi was willing to sell these stones to us recently. He grades these stones high quality with an approximate grit range of 15K-20K. There are 2 stamps on the top of each stone that are easily legible. Measures approximately 75.5mm wide by 200mm long and 34mm thick. It weighs about 2 Pounds 12oz or 1,266g.