Buckminsterfullerene? Graphene? A negative of all the lost marbles from Hungry Hungry Hippos running off to start a precision drill team?

Nope. These are an infrastructure thing, and they do very well and very simply a job you might not have even known to wonder about. Still haven't guessed?

Taking a cue from awesome colleague Melissa C. Lott, I'm jumping on the Photo Friday bandwagon. Here's a thing I ran across in my infrastructure travels recently and thought I'd share. Know what it is?

Just look a second and see if you can identify. I'll post the answer later today.