Ernie Ball 2223 Nickel Super Slinky Pink Electric Guitar Strings 6 Pack Gauges 9-11-16-24w-32-42 Gauges 9-11-16-24w-32-42 Nickels are the most popular of the Ernie Ball Slinky guitar strings They're made from nickel-plated steel wire wrapped around tin-plated hex-shaped steel core wire The replacement strings produce a well-balanced all-around good sound