Smoother, rounder vintage tone. Ernie Ball 2502 Pedal Steel Guitar Strings are crafted from nickel-plated steel wire wrapped around tin-plated, hex-shaped steel core wire. By far the most popular, these strings produce well-balanced, all-around good sound. All Ernie Ball strings are precision manufactured to the highest standards and most exacting specs to assure consistency, optimum performance, and long life. 2502 - 13 / 15 / 10 / 14 / 18 / 22 / 26 / 30 / 34 / 38