Re: Copper to PVC Bathroom Sink Drain
If I'm seeing that image correctly, you have two nuts, one on the 2" pipe and another around the 1-1/4" pipe. This should be a slip joint. By removing the smaller pipe nut, you can remove the remainder of the old 1-1/4" drain and allow you to install the new one. It's called a slip joint because the smaller pipe slides inside of the larger one. A nylon or rubber ring will seal the joint when the nut is tightened.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!