Rear drawer slide socket from kitchen cabinet

The drawer slide says "Hettich 602" -- my local builder's supply store said they thought it had been discontinued.

Overall length is 4 1/1". The socket is 1" but flares to 1 1/8" on the outside to fit the edge of the drawer slide.

Halp! I can't find these anywhere, and I didn't see any of yours that had a big enough socket (which is the only part that really matters, right?) If I can't find these, I'll have to replace the whole drawer glide -- but what is what is this kind of drawer glide called? The kind that runs along the side of the drawer, but mounts to the back of the cabinet rather than the side? The "side-mount" ones I've seen attach to the side of the cabinet, which I don't think will work.

THANK YOU!!!

Thanks! Not sure if either will work, but I'm going to try them both and let you know.

Did those replacements work?

Any definitive replacement part for The drawer slide says "Hettich 602" -- my local builder's supply store said they thought it had been discontinued.
Need back plates please