When I found these the other day I had no idea what they were, I just thought they were really excellent looking, and a bit like make-do miniature Christmas trees! I have since learned that they would have been used for washing glass, with the wire springs (which are held very taught) providing and abrasive surface, and with the threaded ends, looking like lightbulb sockets, screwing into some sort of industrial machine. Their conical shapes suggests perhaps they were used for cleaning lab equipment like beakers, but I don't know for sure. The taller one is marked Superior, which makes it even better.

Price is for the pair. Taller measures 4 1/4" t. Shorter is 3 5/8" t. Nice weight to them, both in good condition, with a little wear/loss around the bases.