NS Electric Traditional Double Bass by D'Addario NS Electric Traditional Double Bass strings are constructed and tensioned similarly to acoustic bass strings, for a warm tone, feel, and great bowed response. Multi-strand steel core wrapped in copper, tungsten, and aluminum with just the right damping bring out the acoustic quality sought after by many performers. Designed for ease of bowing, these polished flatwound strings respond quickly to input from the player. All Strings Are Stranded Steel