These are the Potensic Atom Stick Add-Ons. It makes your shots more precise.

How to use:

Print out the two pieces.

Unscrew the sticks and slide the pieces on.

Then, screw the sticks back into the controller, make sure to line up the pieces so it's like a +.

It should look like this when finished:

To use:

Once they are on, when using the sticks, look at the add-on pieces, and there are 3 grooves jutting out from the pieces on each side. For example to do a panorama, simply put the left stick on increment 1 to the left, and the right stick on increment 1 to the left. Do increment 2 or 3 for faster panoramas. Do like this for other shots, and they should come out very smooth! Hope you like it!