Our keyboards arrive with rubber shims already installed on the hinges. Some models come with an additional set, if the keyboard is compatible with other iPad models.
If rubber shims are removed from the keyboard, they can lose their adhesive quality, and replacements are likely needed. They are available here!
Note: The Brydge 12.3 keyboard arrives ready to fit the Surface Pro 7, Surface Pro 6, Surface Pro 5, and Surface Pro 4.