Please id window part

A home owner from CA says:
July 31, 2018
Please help id window part pic aattached.
Profile picture of Tom
Tom from SWISCO responded:
August 7, 2018

It's tough to tell what you have from this photo. Would it be possible to see it removed? May I also have your dimensions? I saw you were looking at our 87-205, which is similar (other than the two wheels). You could use the dimensions we show for this part as a reference for what measurements we need.
Tandem Roller Assembly, 5/16"
Tandem Roller Assembly, 5/16"
87-205
$2.47
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