Gauges 50-70-90-110.

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 results in a bass string that is highly flexible and musically bright without harshness. Hi-Beams are renowned for unusually long life, consistency and string-to-string balance. They don't eat your frets. Choose them for brightness and ease of playing. They fit virtually all scale lengths up to 37-3/4".