I was initially confused by the application due to the design's lack of clarity. The plastic connectors are inserted from the top and the bases are screwed into them. Do not make the same mistake as me and install them from bottom to top.

Now, regarding the product, it worked well even though it was not specifically designed for my toilet (due to its age). It is fully functional, of good quality, does not creak or make noise, and most importantly, it has the feature of easily detaching and removing from the toilet with a button, along with an internal spring. So, if you push the rim, it gradually settles onto the toilet without the fear of it hitting or making noise. I am satisfied with the performance of the product