Cannot find this pocket door roller

A professional from Fayetteville, Arkansas says:
August 30, 2019
I am struggling finding this part, can you assist me
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Paul from SWISCO responded:
September 6, 2019

I'm afraid your roller has been discontinued and is no longer available. The only option we have that may work is replacing the entire track system with a kit like our 23-251. I'm sorry that we can't offer a better match.
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