Included are 3 different sizes and 3 different angles of 0 (straight), 15, and 30 degrees. The bracket is symmetrical and can be flipped if needed. You can also add the 15 degree bracket included with the camera to get 45 degrees if needed.
I've also included some wedges allowing you to rotate down or up by 5, 7.5, and 10 degrees. I'm using this to capture a bit more of the packages left on my porch.
You can use the screws that came with the doorbell to attach bracket to the house or something like this:
#6 x 1-1/2" Stainless Steel
I attached the aluminum doorbell bracket to the 3d printed bracket by screwing directly into the plastic, but you could probably pre-drill some small pilot holes, however I found it better just to drill directly into the plastic.
I used the following screws:
#6 x 3/4" Stainless Steel
Nothing special required to print.