This is a Kyoto Maruoyama white suita lotus stone that I purchased from Totorike-san in the past. Since I mainly use stainless steel kitchen knives and knives, I don't use white suita stones very often, so I am putting it up for sale. I have not used it, but it is a whetstone that can also be used on the back (photo 5). Length 211mm, width 81mm, thickness 43mm, weight 1689g. Please understand that there may be some errors due to the amateur measurements. Due to the nature of natural whetstones, no returns or refunds will be accepted.