"Material: Tinned Copper " What is this exactly? copper .
"Material: Tinned Copper" What is this exactly? copper is not plated with tin, perhaps it is blended but there is no evidence of copper I could see. I tried to grind off the tinning to see the copper, none there.
Pros
What! Its an expendable that's buried in a box and it works.
Cons
The connectors might break or become brittle over time