Your review: I ordered a material rack that has a design calling for 9 of these parts. I was sent 27. When i asked about why there were so many i was told they would all fit. Not so. So i have 18 extra parts and was also told i could send them back at my own cost. Not going to happen either.
Pros: They work great
Cons: Sent way to many. Someone paid for this. My ticket shows i only paid for 9. I assume this is your loss.