This is a disposable filter for one cup from HARIO. The filter is small, so I think the appropriate amount of coffee beans per use is about 10 to 12g.
Manufacturer Description
A disposable coffee drip filter for one cup of coffee that is convenient for use at home, in the office, or outdoors. Since it is a disposable type, you can use it anywhere with just this one. It is a cone-shaped filter that is also used in the V60, which is highly acclaimed worldwide.
