need to find this Glazzing bead

A contractor from arizona says:
I am replacing four windows and these plastic glazing beads have been on the windows 20 years. They just crumble when I try to take them off. so I will need to replace them. Can you help me locate them?
User submitted photo of their window hardware.
Profile picture of Paul
Paul from SWISCO responded:
Check out our 55-174 snap in and let me know if this will work for you.
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