Savarez bass range strings for classical guitar

Here is my demo of two bass range strings for classical guitar by the company Savarez. Savarez 5210R 10th string (A 55Hz) standard tension, Single String, .066 in, Silverwound Copper on Nylon core. Savarez 5213R 13th string (E 41Hz) standard tension, Single String, .086 in, Silverwound Copper on Nylon