D'Addario EXL170BT Nickel Wound Bass Guitar Strings, Balanced Tension Light, 45-107 Balanced Tension sets allow the player to apply the same amount of fret hand pressure to each string Round wound with nickelplated steel for distinctive bright tone Environmentally friendly, corrosion resistant packaging for strings that are always fresh Made in the U.S.A. for the highest quality and performance String Gauges: Nickel Wound .045, .060, .080, .107