Rotosound ULTRAMAG Type 52 Alloy Electric Bass Strings Long Scale Set - 4-String 45-105 UM45

UM45 - .045 .065 .085 .105

Before "Coated" strings were a thing, Strings with a Nickel/Iron alloy (Type 52 Alloy) were known to be the longest lasting and highest output strings available.  Rotosound is bringing them back using their premium nickel/steel alloy a higher output from their greater magnetic content.  

Rotosound ULTRAMAG Bass strings feature: