Ernie Ball revolutionised electric guitar strings in the late 1960's by creating lighter gauges that better suited the rock guitarist, ‘Slinky' strings were born. Ernie Ball Nickel Wound strings feature the best of both worlds; a steel core wound with nickel. This combination of steel and nickel creates a well-balanced sound. Ernie Ball Regular Slinky 2221 10-13-17-26-36-46 Notes- A great gauge for rhythm guitarists, a chunkier sound and feel than Super Slinkys.