| | ProSteels are D'Addario's brightest and most magnetic guitar strings. If you need a little more crunch, bite, and sustain, ProSteels are the string for you! - Highly magnetic, corrosion-resistant steel alloy - Precisely wound onto a hexagonal core - Delivers super-bright tone without shrill overtones - Harmonically rich and brilliantly penetrating highs combined with pronounced, tight-and-tough lows - Has a wound 3rd (G) string like acoustic guitars but made for an electric guitar - Jazz medium - Gauges: 13-17-26-36-46-56 | |  |