Closet track roller on the bottom

A home owner from California says:
November 21, 2014
This is a broken piece of a closet track guide that slides on the bottom of the closet tracks.
It states Cx 21-022 Pat Pend on white plastic.

The closet has two pieces on the bottom sides of each door.

Would like replacements.
User submitted a photo of closet door hardware.
Profile picture of Paul
Paul from SWISCO responded:
November 24, 2014
Thank you for contacting us. Our 23-021 is a newer style Cox bottom guide. Do you think this could work for you?
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