130 ml porcelain mortar and pestle. Grind your own herbs, spices, medicinal mushrooms, or lab concoctions with this convenient set. Great heavy-duty mortar, with sides that are 5/16" thick. The mortar is glazed outside, but rough inside, which makes it the perfect texture for grinding. The mortar also features a convenient pouring lip. The business ends of the pestle is unglazed, while the shafts are glazed. Very functional, very good looking!