Tilt double hung window hardware need

Please help me identify the hardware pictured. It is an oblong plastic pin and spring clip assembly for my double hung tilt out windows.

The part is plastic and has a flat bar spring idle tension. The left and right lower window pins mount inside the assembly. The Assemblies slide inside both the left and right frame channels holding the long balance seeing. Each Of the assemblies has a hook that retains the long balance spring inside the window frame. The hook broke off in two of my windows.

I am selling the property. I have three days to find the replacement parts.

Thank you

Robert