Hi-Beam Stainless Steel Bass Strings are round wound and constructed upon a round core which is unique in the industry. Hi-Beams require much more time, care, and extra steps to make than other bass strings. The extra effort DR expends making Hi-Beams results in a bass string that is highly flexible, musically bright (not harshly bright) and renowned for durability, unusually long life, consistency, and string-to string balance. They don't eat your frets. Hi-Beams are the string to choose for brightness, and ease of playing.