VIBE Strings Acoustic Guitar Strings Light (.011-.050), Phosphor Bronze, 1 Set

are nylon strings too?

how do you know they "last", if you just got them?

It says purchase 2 sets and receive 5% with coupon code yet amazon says you limit it to one set per customer so I can't add 2?

I’m looking for medium gauge strings for my 12-string. where can i get them?