Hand made in the USA.
Used for 2 years on my electro-acoustic (not the same).
String core spun round two son, a nickel-plated steel and other phosphorous bronze.
The sound is very good, bright and deep.
A bad surprise came on a game corroded and the A string life (does not sound). Corrosion problems seen elsewhere on the net at this mark.
Good value for money.
The score given is largely weighed down by this game received defective.
I do not know if I will try the next set of strings, a shame because they sound really good.