They are not very good strings. Well-packaged but the sound performance is not what it should be. I bought this set from a store with recommendations for a high-quality set, hence the price. The sound was nothing special on the D and A strings, but the bass strings were terrible. They had a very metallic sound that doesn't match anything on a folk instrument. From the time I used them, about 2.5 months, they showed no signs of wear, meaning they are quite durable. But I will not buy them again because of the sound.