BASS STRING SET String Set for 5 string flat wound CR Series ECB81-5SL Chromes Bass 5-String, Light, 45-132, Super Long Scale (045 - 060-080- 100- 132) Super Long Scale. D'Addario Chromes Bass Strings are famous for their soft touch and warm, melodious tone. The ropes are made by winding a flat outer layer, which will later be polished to obtain an extra-smooth finish. Chrome delivers a deep and rich sound making them the flat wound option for Jazz, R&B, and Pop musicians.