Ernie Ball Rock n Roll Regular Slinky Electric Guitar Strings 2251Ernie Ball Rock n Roll Regular Slinky Electric Guitar Strings 2251 Ernie Ball Slinky Classic Rock N Roll Pure Nickel wrap electric guitar strings are made from pure nickel wire wrapped around tin plated hex shaped steel core wire, these guitar strings produce a warm rich tone with that signature Slinky feel. Gauges . 010, . 013, . 017, . 026, . 036, . 046