Pottery Tokkuri (Sake Bottle) This is a rustic and calming piece of pottery that evokes natural colors. I found it by chance and purchased it. In addition to being a tokkuri, it can also be used as a vase (for a single flower) or a decorative ornament. Size: Opening diameter: approx. 4.0cm (minimum inner diameter: approx. 1.8cm) Maximum width: approx. 12.5cm Height: approx. 14.5cm Capacity: approx. 4.5 go (approx. 810ml) Other: There are small indentations on the body, which act as a non-slip feature.