Helicore double bass strings are a favorite with advancing students and professionals alike! Made from stranded steel wound with aluminum, Helicores combine the strength and direct purity and brilliance of steel with the soft left hand feel of rope core. Very durable and long lasting, totally dependable for the most demanding conditions. Manufactured in a medium gauge for all styles of playing. Choose standard Orchestral Helicore bass strings for a warmer sound, superior bow response, and a less-sustained orchestra-style pizzicato. Choose Hybrid Helicore strings for a more brilliant sound, and for good bow response and easy, resonant pizzicato.