These window winder backing plates go onto the handle shaft of the winder mechanism BEFORE you put the winder handle on. They are designed to protect your door trim material from being worn through by the continued winding up and down of the window.
These window winder backing plates go onto the handle shaft of the winder mechanism BEFORE you put the winder handle on. They are designed to protect your door trim material from being worn through by the continued winding up and down of the window.