No. 31 Go Stones Nachi Black Go Stone Case This is a set of go stones and a go stone case. *Go board not included. Both the go stones and the go stone case have a deep, aged look. How about this exquisite item for those seeking a sense of weight and substance? [Go Stones] Genuine Clam Shell Go Stones: 177 stones Width: Approximately 21.5mm Thickness: Approximately 8.5mm Nachi Black Go Stones: 182 stones Width: Approximately 21.8mm Thickness: Approximately 8.8mm I believe these are No. 31 size. [Go Stone Case] One side has been repaired. There are no problems with carrying it. Please refrain from purchasing if you are concerned about the condition or are looking for a perfect item, as this is a used item. Please be sure to check the images. Go Stones No. 31 Clam Shell Nachi Black