Interior window trim

A quick learner from Texas says:
I'm not sure what this broken flat trim is called, so I don't know where to begin searching your catalog for a replacement or figure out how to remove it. The trim is brittle on all of our 20-year-old windows, so I need to replace a lot of it.
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Casey from SWISCO responded:

Hi there, thanks for writing in. It looks like you are in need of some new glazing bead. You can view our selection here . If you need assistance identifying the correct part, I will need to see an end profile of an undamaged portion of your glazing bead removed from the window. Thanks!

A quick learner from Texas says:
I am returning to this window project after tackling others and removed and photographed the trim. Is this glazing bead and do you stock anything comparable? It is 7/8" wide. Thanks for your help.
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Tom from SWISCO responded:

Thanks for getting back to us. It's difficult to determine what you have without seeing the end profile, but one possible replacement is our 55-174 . Check it out and see what you think.

Diagram of 55-174
Diagram of 55-174
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