Searching for non pivit shoesfor

Hi, my name is Tina. I am looking for replacement parts for my Malta windows from 1999. I need the window shoes and the ,spring that goes with the windows. They are double hung, vinyl clad, and sash tilt in windows. The shoe is 1/2 inch thick and 1/2 wide. I am more than capable at putting them in but having trouble finding the replacement parts. Can you help me.

Thank you

ps the length is approximately 2 inches but it broke so I am not sure.