HI-BEAM? Bass Strings blend a stainless-steel wrap wire wound on a round core to produce great flexibility and musicality without harsh brightness. Their flexibility makes them easier on fingers and on frets. They are renowned for unusually long life, consistency and string-to-string balance. HI-BEAMS are the string to choose for a bright and solid tone with great punch and ease of playing. The stainless steel wrap wire produces a balanced brightness that cuts through the band The round core wire increases flexibility and musicality without making the tone harsh Round Core Wire on a Ball End with a Stainless Steel Wrap Wire