Get the most out of your bass! ProSteels are made from a specialized stainless steel alloy that delivers harmonically rich, brilliant high-end and deep, focused bottom. These strings excel at delivering the ringing piano-like tone that many bass players crave. Each wrap is precisely wound onto a hex core using D"Addario"s exclusive computer-controlled machines, which monitor and control wrap speed and tension with extreme precision. The result is a set of strings with precise intonation and unparalleled consistency gig after gig.G: .045" diameter; 41.9 lbs. tension D: .065" diameter; 47.3 lbs. tension A: .080" diameter; 40.5 lbs. tension E: .100" diameter; 34.4 lbs. tension B: .130" diameter; 31.7 lbs. tension