All our strings are Schreiber brand, formerly Fladmark, made in the USA.
Made for those like the old black autoharps that have two rows of end pins along the anchor end of the frame. Silvertone and Airline are the same instrument. These strings carry a loop end. The grommet or "ball end" of any orginal is not needed, and the standard ball opening doesn't fit the end pins, so the grommets/balls aren't used anymore.