XL Nickel strings are the industry standard for electric bass strings. With their clear fundamentals, powerful lows, and reliable D’Addario construction, players around the world trust them to handle any performance. XL Nickel bass strings are made with a high-carbon steel core and wound with nickel-plated steel wire, for a bright sound and smooth feel, ideal for a wide variety of bass styles. This 45-100 Regular Light set is the short-scale version of our most popular bass gauge, providing the perfect blend of response and playability.