Gimbal handle

This is a handle I made in order to convert a quadcopter gimbal to a hand gimbal.

This is a first design, and it has a rough finish, but is fully functional.

If you want to use it, keep in mind that the pieces are designed to fit my gimbal and my battery. Other gimbal models or batteries maybe doesn't fit.
This is the gimbal I used:
http://www.ebay.com/itm/131789425404
And this is the battery:
http://www.gearbest.com/rc-helicopter-parts/pp_228781.html

There is a hole in the top cove