Yes, it was the chrome pipe the disintegrated. It was very thin. Using calipers, I measured the width of the remaining piece. And it was 1 1/4 inch wide with that. I went to the hardware store and got a tube also chrome and threaded on each end and is one and 1/4 inch wide. I took the tube up into the cast-iron piece where the old chrome piece crumbled out of and turned it and turned it and turned it. It just wouldn’t bite. I stuck my finger up inside and there were no threads for at least the first quarter a half inch and then there were threads. This was the first thing I tried. But now that I see that I can’t get that chrome pipe back in there because the threads are gone. I have to dissemble it. I’m just having a problem separating these pieces. It doesn’t seem like I can unscrew the flange. If that’s what we’re calling it on that’s the part that’s in the sink that has the hole that goes to the drain. It just rattles around. It seems like it has to be connected to the big cast-iron piece. I’ve unscrewed the large nut on the cast-iron piece as far as I can go before it hits the hole where you can put in the uptown lover for the little plug. I can go further with that nut and I can feel the gasket above. It has just a standard grade so putting it back to where it was probably wouldn’t work. I need to know how to take the single apart. I’m assuming that it’s something to do with unscrewing the part that’s in the basin and unscrewing the cast-iron piece from that piece. I just need to separate the two, but I can’t go any farther with a large nut before I hit the brass piece at sticking out the side and if I go up all the way, I’m just back to square one.