Please help identify this Polybau sash window part

A home owner from Lakewood, CA says:
Hi!

These little guys get screwed to the bottom of the sash window and slip into the spring mechanism in the balance channel to support the window's weight. I have 4 broken ones and my windows will drop like a rock if you don't hold them up while you unlock them.

Thanks,

JV
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Casey from SWISCO responded:

Hey JV, thanks for reaching out! I think your pivot bar looks pretty similar to our 26-424. Can you compare the dimensions and let us know what you think?

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