It's a pack with 4 different sizes in it... looks like anodized aluminum, in 4 different colors. I think it was actually labeled for air conditioning connectors, and had fuel line connectors as an "also"... or something like that. They appeared to have much better quality control than the chrome...
I had the exact same thing happen to me. Bought the $8 chrome one, and when I tried to use it, it wouldn't slip over the fuel filter line and under the lip. It was crooked and I could only get one of the halves on it at a time. I tried and tried and tried (having never used one before and not...