Review on Valterra T01-0091VP Swivel Drain Connector - 90°, 1-1/2" x 3/4", Black - Efficient Plumbing Solution with Swivel Feature by Joe Roberts

I was converting my RV and used them to replace the large 1.5" drain pipes under my sink. I screwed it to the sink's siphon and ran 3 4″ clear vinyl tubing for the drain line. Works great. The reason they got 3 stars is because the tube nut has two threads. It was a real bear trying to get the thing to seal. I ended up filling the entire collet nut with plumbing putty to stop it from flowing. All they have to do is make the nut deeper so it can be screwed on securely.