The making is solid, and there is no worry even if it is strongly pressurized. It can be used for drain outlets and toilets that are larger in the bathroom.
The goodness of familiarity of the outer circumference of the rubber and the balance of the cup are designed in a well-balanced manner.
"Can also be used for Japanese style toilet" can not be used! It seems that the shape of the water reservoir can only be used for drainage grooves beneath the direction in which the flowing direction is circular. This product should not trust the note