Can anyone ID this gloryhole set?

Or provide more pictures from it, etc.? This is one of my favorites of the genre. I don't normally get into glory hole pictures because I'd rather watch a woman suck me off. But there's something appealing about this because 1) the fellators, who are certainly prostitutes, look a little bored, but they're doing it anyway, 2) it's clearly an amateur set-up in someone's house, 3) it must be for a large group because there is a *lot* of cum on the floor. I'd almost rather be watching from the girls side than on the other side of the hole, because the idea of them sucking off a chain of guys assembly-line style seems hotter than the actual feeling of being sucked in that way.

No idea but I would love to know too