GHS Strings GBZW Boomers, Nickel-Plated Electric Guitar Strings, Heavyweight (.010-.060) Heavyweight Gauge: 010-013-017-036-052-060 Round wound Nickel-Plated Steel on a Hex Core Great for drop and alternative tunings. Air tight packaging and an Anti-Corrosion Guarantee Offers a brilliant tone and powerful attack, THE POWER STRING.