Magma BE170S 4-Strings Stainless Steel Round Wound Long Scale Electric Bass Strings- Medium Gauge Overview:

Made of Stainless Steel over a hexagonal core, specially designed for people allergic to nickel.
Give a bright and clear sound, because stainless steel is highly magnetic.

BE170S Medium Gauge: 1G .045, 2D .065, 3A .085, 4E .105