To connect old flashes as the HVL-F43AM HVL-F58AM or with newer Sony cameras (eg A99, A58 or 3000K), you have to be stuck in between therefore this adapter (ADP-MAA). Older camera models like A37, A57, A65 or A77 take the adapter is not because you have installed the old hot shoe (the need reversed the Adpater ADP-AMA when newer Sony flashes as the HVL-F43M or the HVL-F60M wants to connect to it).
The adapter has an overall stable impression.
It loops through all flash functions, so you can use the older flashes without limitation with the new Sony cameras.