Gauges 45-65-80-105. Long scale. Rotosound makes the world's most famous and highest quality round-wound electric bass strings. • Rotosound was the first string company to produce this kind of string • The steel used to produce these strings is unique, combined with a secretive manufacturing process • Favorite string of many players including Billy Sheehan, John Paul Jones and Geddy Lee • A combination of Stainless Steel and round wire to produce an extremely high output bass string