These guides are for the TOP (3rd) level pull out tray.
Third level Samsung Dishwasher Slide Rails DD82-01170A DD82-01169A
Orig in a Samsung DW80K7050UG
These glides go to a number of roller types, I will include the ones which was used in this application which are part number
Note the large washer and screw for mounting. Other styles typically have oblong plastic blocks.
As you can see, they are in nice condition, no corrosion or wear.
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FITS THE FOLLOWING MODELS