BlackSmith electric bass strings are made with the finest materials and manufactured using state-of-the-art automatic servo controlled winding equipment. USA made nickel and steel ensures a long lasting string with increased sustain and purer tone. The Nano Carbon Shield AOT (anti oxidation technology) coating prevents oxidation and dirt build-up on the wound strings without blocking the string ground conductivity like other brands – a BlackSmith exclusive!! With BlackSmith Nano Carbon Shield coated electric bass strings, you will experience the perfect balance of consistency, tone, and playability. Vacuum Sealed in Patented Anti Kink Packaging Prevents Oxidation and String Damage. ANW-40125-5-34 - BlackSmith's coated 5-string version of our popular NW-40100-4-34 nickel-plated steel roundwound bass set. With the addition of a .125" low B string, this set gives players a softer feel than a standard bass set, while still maintaining the distinctive combination of clarity with a punchy, tight low end. The proprietary Nano-Carbon Shield AOT (Anti-Oxidation Technology) maintains the classic tone and feel, with extended life and no loss of string ground conductivity. Fits basses with a scale length of up to 34 inches.