DR Strings Hi-Beams 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 also don t eat your frets.