The ultimate bright-sounding bass string. These strings start with a 92/8 phosphor bronze under-wrap wire over a hard-tempered hexagonal steel core. Then, the "Fusion Winding" process, exclusive to S.I.T. uses an electrical calibration technique to integrate the strings cover winding with its core. This innovative method fuses a string into one super flexible mass, eliminating dead spots that occur during the strings life. • MFSKU NRB545125L • UPC 649687505479