The window hardware has broken

Hello there. It looks like you need a new pivot shoe. I am confident we can help, but we carry a wide array of these pivot shoes, and the only way to know which one you need is to remove the old one from the window and measure its width and thickness. These are the pertinent dimensions for pivot shoe replacements. The video below shows how to remove and replace pivot shoes like this. You can view our selection of these shoes here. 

Perfect! Glad we could help. Let me know if you have any other questions.