Not a diaphragm, but an IUD for someone who really, really hates kids.
Cow tools?
{Creepy Laughter} Heh heh heh. {/CL}
Whatever it is, it’s Keter class for sure. We’ll all be dead by dawn.
It might be an articulated gyrogorphotor. Or maybe part of a commercial cake mixer?
It has 12 prongs in total - part of the frame for a clock? That would also explain the hanging hook on the back…
I don’t know what it is, but I wouldn’t put my lips on it.
So it’s the metal endoskeleton of a spider Terminator? That means Skyweb is going to kill us all !!
I agree with mop head frame. Dry mop, more like a duster, like my mom used to always use on the hardwood floors. The metal piece that’s sort of separated from the circle, goes into the bottom of the handle, allowing the mop to swivel.
And note the spring. You can squeeze the two halves of the circle together, making it smaller as you stick it into the mop head, then when you let go it expands inside to hold the whole thing in place. I think you have it.
You guys are saying “mop” like it’s not a sex toy. 
I agree with some kind of mop head, I think Harmonious Discord was the first one with that assumption.
If Skyweb made it, it’s most likely benign. It’s Skynet ya gotta watch out for.
Isn’t that redundant?