Elixir Strings 80/20 Bronze Acoustic 4-String Bass Strings w NANOWEB Coating, Long Scale, Light (.045-.100) Acoustic bass guitar strings constructed with 80/20 (80% copper, 20% zinc) bronze wrap wire Played for a bright, vibrant tone with plenty of mid-range presence and punch Ultra-thin NANOWEB Coating, redesigned specifically for bass guitars, provides a smooth, natural feel that also enhances grip Our patented coating technology protects against common corrosion, extending tone life longer than any other brands coated or uncoated strings (Elixir Strings player survey) Long Scale, Light gauge: .045 .065 .080 .100 Smooth feel that is easy on your fingers and enhances playability