Unfortunately useless seals are supplied. They do not close because they are chosen too thin. Then another reviewer has already pointed out. There can be no turning / tightening with the pipe wrench or other tool. One can already detect the defect with the seals when comparing the photos of drainage sets from different manufacturers. Other manufacturers supply the matching seals several times as thick. Unfortunately, I did not pay for this purchase it. The sink is brand new and has also purchased from Amazon. In addition, I do not do such a mounting for the first time. In this respect, I conclude from mishandling. Now we have to hope that you can remedy this deficiency with Plastic Fermit or right seal from the hardware store. Unfortunately, today is Sunday. For this price, so anything goes not !!! Zero stars do not work, so forcibly a star!
