Window spring

A home owner from Colorado Springs says:
The part goes is the spring loaded portion of the window that holds the spring. The metal portion is 33 in long. The plastic pulley broke and can't hold the spring. It is from an amsco window
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
We should be able to help. You have a special type of balance that we can custom make. Before we begin, I need a bit more information. First, can you confirm the exact length of the metal channel? It should end on a 5/8" measurement. I will also need a picture of the top nylon attachment and the metal clip at the end of the cord. We will also need the stamp printed on the metal channel. Finally, please let me know how many you need.
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