BASS STRING SET D'Addario EXL160S Medium Short Scale Electric Bass Set [50-105] (050 - 070 - 085 - 105). - D'Addario XL Nickel bass strings are world renowned as '' The Bassist's Choice '' whatever the style you play. XL strings are wound with great precision with nickel plated steel onto a hexagonal shaped core, resulting in strings with a distinctive, brilliant tone and excellent intonation. Nickel-plated steel wire wound to the core is hidden by its distinctive bright tone and excellent tuning for all styles.