Rope-like steel core gives these strings great power and projection. G string is nickel winding on steel. D,A and E strings are tungsten winding on steel. Available in medium, heavy and extra high tension gauges.
Spirocores hi-tech core makes for effortless fingering, responsive bowing, stable tuning and a very long string life. With Spirocore, the steel strings technical possibilities have been developed to their maximum.