Hi-Beam Stainless Steel Bass Strings from DR are roundwound 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 without harshness; and strings that are renowned for unusually long life, consistency, and string-to-string balance. • MFSKU MLR-45 • UPC 600781000161