Heavy 4-string set from BEAD TUNED BASS BOOMERS series for electric bass guitar that is suitable for players who want to tune their instruments in B-E-A-D tuning. The strings are wound with nickel-plated steel for a brilliant tone with great sustain and fit all basses with 836.6mm scale and some with 889mm scale. This set is optimized for B-E-A-D tuning and should not be used for standard E-A-D-G tuning. Gauges: .070, .090, .115, .140.