50-105 Medium, Long Scale, XL Nickel Bass StringsXL Nickel is the industry standard in electric bass strings. With their clear fundamentals, booming tight lows, and reliable DAddario construction, theyre trusted by players everywhere to handle any performance. The D'Addario 50 to 105 Medium Long Scale Bass Guitars 4 Strings Set is made with a high carbon steel core and wound with nickel plated steel wrap wire, for consistently bright tone and smooth playability, great for a wide variety of bass