The main body, the outer lid / HDPE (high density polyethylene), middle cover / LDPE (low density polyethylene), O-ring / nitrile rubber
It becomes capacity notation by the specific gravity of water. For different specific gravities, such as oil, depending on the contents, there is a case where the capacity you have notation does not turn on.
I felt that size and good, shape and nice well made, but sorry! . I thought that the flow rate discharged from the appearance of the cock was somewhat but I was surprised to see it working! . There was almost nothing coming out. When looking inside it was a structure that does not flow unless it passes through a slit which is considerably thin. Perhaps it was worse judging from the size of the appearance of the cook, but I was a little disappointed at all.