Features: Made from premium carbon steel & iron alloy, these hexagonal core strings can offer clear, bright & sensitive timbre and longevity.  All strings are made with exquisite winding and polishing techniques.  Plated with bronze anti-rust multipolymer coating, ensuring a long service time.  Hexagonal core string can ensure the fastness and stability of the bass string.  Wide application, suitable for 4-string 22-24 frets electric bass, perfect for professional performance and daily practice.  Each string is interdependently packaged and marked 1-4, convenient for you to install.  Smooth strings, comfortable to play, giving you excellent playing experience.   Specifications: Model: A647(4)-M;  Color: Bronze;  Material: Carbon steel & iron;  Strings Weight: 84g/ 2.96oz;  Package Weight: 124g/ 4.37oz;  Package Size: 14.5 * 14.5 * 1.5cm/ 5.71 * 5.71 * 0.59inch;   Package List: 4 * Bass Strings