Mirrored Wardrobe rollers

I need four replacement roller assemblies, and the bottom track that they roll in. I have the top guide track. I would like to know the replacent part numbers, if that is possible. THey are mirrored wardrobe doors that overlap slightly. The outside width of the mirrored sliding door frames is 7/8". The roller wheels seem to be 1 1/2" dia. And the roller frame that fits inside the mirrored door frame is 9/16" wide