"2.25″x.5″x.5″ (approx) steel bar with rounded upper surface containing two unequally spaced circular fasteners(?) with small round dimples. [Not typical screw fastener] What is this for?"
A: "It’s to prevent skateboarders from sliding and grinding the edge."
Surely not as confused as the person who wrote it…
I think the stem is hollow, which would make it a really fancy Klein bottle. Can't tell, though, so you may be right.