I just got a new tent and it came with this aluminum piece: It is aluminum (like the poles), but it is a larger diameter than the tent poles. It fits over the tent poles like a sleeve. I've owned several tents before and have camped since I was a kid, but I don't have a clue what this piece is. In fact, I was so clueless as to what it was that I actually read the directions :eek1, but the piece wasn't mentioned there. Does anyone else know?