In the end, most of the time you get what you pay for in this life. Geberit, for those who know, is the top in toilets and more. After 15 years of having the built-in one, it may have had a slight water leak 1 out of 20 times. With a video on YouTube uploaded by the company, without tools and without knowing what I would encounter when opening it, if you follow the steps, everything goes well. The replacement part fit perfectly and the toilet, after 15 years, remains new.