I'm selling this adapter and rod support because my canon xh-a1 broke and I no longer have a use for it. The mount is for Nikkor lenses and connects to 72mm threads on the video camera end. The only issue is that i've misplaced the part of the charger that goes from the adapter into the charging unit and a little screw that fully locks the lens into place. I've never had an issue with a lens falling out though and it seems very secure. I'm sure both are easily replaceable.