These were stainless clamps that I used on my roadster to hold the fuel and return lines to the rail. They look nice. On SS line I like them because they polished up real nice. On the aluminum fuel line I showed earlier in my truck I used those adell clamps because I thought they would protect the line better and I had them lying around. Mostly because I had them lying around. @31Vicky with a hemi are they really that nasty?