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. Gauges: .045; .065; .085; .105; .125