5-STRING SET FOR BASS 4-string set for D'Addario ProSteels Super Light, Round Wound, long scale (040 - 060 - 075 - 095). The ProSteel Strings are our brightest and most magnetic strings. A special steel alloy offers us great harmonic richness and brilliance together with a depth of sound, this set of characteristics work together to obtain the much-coveted "piano tone". Perfect for both finger playing and plectrum playing. ProSteel strings will give you the punch you need in the mix.