Rear mount part for my drawer

I'm afraid that we don't have this item. I don't think this style of drawer socket has been made in a long time.

The best option we have is our 32-119. This has a 1" opening that I believe should fit around your exiting drawer tracks, but it's designed to install to the back wall of the cabinet using screws. This is how most drawer sockets are made these days. You'll have to drill new holes in order to get this to work.

I'm sorry that we couldn't offer you a better match. However, I believe the 32-119 will work well for you despite its differences.