As my drawer of vanity cabinet according to the plumber necessarily would have to be sawed back, since the wall drain hole about 15 cm. added was my siphon, I have seen what I can do without Saägen and came across this product. Finally, I have not see why I should saw off an expensive drawer of the cabinet, just because the installer did not have proper utensils there. Funnily enough, there was the hardware store also not suitable. So I have times propiert with this product and lo and behold it worked. One thing I had to do but still, the tube is thicker at the rear and you can then saw off the thicker part, so it also fits into smaller wall holes yet. The installation I then made himself.