fd178d24_n_and_How_Should_They_Be_Used___Strengths
[Line] Single-strand piano or music wire [Weaknesses] Subject to kinking, can only be connected by a haywire twist, not corrosion resistant so must be washed in fresh water after use [Strengths] 
Inexpensive, resistant to sharp teeth, smaller diameter than monel or stainless for same strength
Fishing Leaders - Just Why, When and How Should They Be Used?
Strengths