Hi,

Last time I bought a bag of olives they were made from copper. I
notice that screwfix and toolstation now sell brass olives instead. Is
the only reason for this cost? I imagine that brass is cheaper than
copper?

I notice that most fittings come with copper olives. Is there a reason
the manufacturers choose copper over brass?

Is there any advantage to using the one type over the other? I know
copper is softer than brass. Does that make a difference in use?

TIA