Simply stretch a rubber band around the tines of the GFY. Then put a grocery bag around those tines. Slide the apparatus over the spy camera and then pull down gently so the rubber band slides off the apparatus and cinching the bag to the spy camera. The screw head fits the typical handles for things like brooms, paint rollers, etc.
This device doesn’t cover the lens directly, it helps you use a pole to get a plastic bag up to hard-to-reach places.
From the summary:
This device doesn’t cover the lens directly, it helps you use a pole to get a plastic bag up to hard-to-reach places.
That’s helpful for understanding the purpose of the device.
I’m still having trouble imagining how it works. Oh well.