You guys are killing me. NO it is a solid piece. I know the picture is crappy but for sure you can see that it doesn't have a hole in it. You are still very close though. (it is not part of a grease gun however)
I think that is just the light. In the first pic the hexagonal part is on the left, while on the right side it looks round. All the other pics look round. It's gotta be a roller bearing.
And we have a winner. Not just any bearing though, it fell out of what used to be the wheel bearing on my truck. Only thing hold the tire on was the damn brake rotor. Okay Kyle E boy, what you got for us.
Dang. I at first said out of an axle housing/hub, then changed it to just roller bearing, since it looked so small.
It is actually just one of the little rollers that go inside the bearing. They are all over my driveway.
Right, I just expected them to be bigger. What kind of truck? Mine on my truck are big compared to these.