This is a mounting wedge for the Amcrest AD110 Video Doorbell. The unit doesn't come with a wedge, so I had to make one.
There is a 15, 25, and 35 degree wedge. There is also a 25 degree wedge with hood.
I ended up sending this camera back because it has a lot of flaws that can't be overcome, but I'm going ahead and uploading the STL files for anyone who is stuck with this camera and needs a wedge.
The wedge is designed so it can be used either directly with the mounting plate (though you may need longer screws) or, if you are replacing a Nest Hello, like I was, it has two center screw holes to mount in the old Nest Hello mounting locations, so you won't have to drill into your house again.