Rotosound UM45 UltraMag Type 52 Alloy Bass Guitar Strings, 45-105
High energy at your fingertips! Rotosound’s new Ultramag strings are made with type 52 alloy – a highly magnetic material made from 52% nickel and 48% iron. This blend gives Ultramag strings more power, sustain, and a longer string life than traditional nickel or steel strings.