what part does the mirror hold on to?

[T12OY]

Hi All,

A motorcycle went into the side of my car last night and smashed the nearside mirror to bits. I have been looking at the damage and i can see that under the mirror fixing is also snapped ( not sure if this is part of the mirror itself) Ive been trying to find out what the mirror is connected to but cant find any info. In the pic where im holding on to the part its the bit underneath which has also snapped. Any advice would be be amazing. Pics added. Thanks in advance.

[Steve Q]

Id recommend searching on eBay for complete wing mirror assemblies.