Roto logo stamped in SS track - black component for L and R casement windows

A handy person says:
November 29, 2021
Show is the intact track assembly for the left casement window. The entire SS assembly, including the black part is 10 5/8" long. Unfortunately the right casement window is not operable because the black part is broken. Think the black part may be called a "shoe". It is not sliding, but is fixed and retains the lower SS arm, seen below the coated operating arms. I need the parts necessary to replace the black component only, if that is possible, but if it is part of the track assembly that is okay, too. Can you assist?
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Emily from SWISCO responded:
December 2, 2021

Hello!

I'm afraid we don't sell that black piece separately so we can only offer the entire hinge set. Start by comparing your dimensions to our 36-048 and 36-049 to see if either matches up to your original hardware. Just be sure to replace the top and bottom hinges at the same time. 
2-Bar Hinge Set, 10"
2-Bar Hinge Set, 10"
36-048
$17.47
2-Bar Hinge Set, 14"
2-Bar Hinge Set, 14"
36-049
$20.52
How to Replace a 2-Bar Hinge Set on a Casement Window
How to Replace a 2-Bar Hinge Set on a Casement Window
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