This is a pressure cooker from Doshisha. 6L. It's large, so it's convenient for cooking large batches of stews. It's a deep pot, so you can also use it as a regular pot for boiling pasta, etc. Inside depth: approx. 17cm, Diameter: 22cm There is no instruction manual. Although it is unused, there are some stains from storage. Please wash it after arrival as it may have a used feel. Thank you.