Hasselblad mount identification

[Kaluacat_Camera]

Anyone have any idea what this is from? Mounts and slides forwards and back, seems like maybe it would rock up and down given the round side pieces? Maybe some sort of flash mount? Anyone have a clue? Thanks!

 

[itsdoable]

Double handle grip for ELM

 

[Kaluacat_Camera]

Thanks a million! All I need are the handles now, lol.