Ernie Ball 2821 Power Slinky 5-String Nickel Wound Bass Set (50 - 135)
The World's # 1 Electric Bass String line, Ernie Ball Slinky Bass Strings are made from nickel plated steel wire wrapped around tin plated hex shaped steel core wire. By far the most popular bass guitar string alloy. Produces well balanced all around good sound. Gauges  .050, .070, .085, .105, .135