GHS Guitar Boomers have been 'The Power String' since 1975, and continue to be the gold standard for musicians across many genres and playing styles. A nickel-plated steel wound over a round core design delivers bright and snappy tone with powerful response, with superior lifespan. Individually sealed in the GHS Nitro-Pack envelope, each string is ensured to be as fresh as the day they were manufactured in the Battle Creek GHS factory in Michigan, and boast GHS's Anti-Corrosion Guarantee. The guitarists of today's heavy rock and metal worlds are tuning lower and lower as time goes on, increasing the number of strings to broaden their sonic palette. Designed in collaboration with many extended range guitarists, and employing tapered ends on the larger (over 0.70) gauge strings, the GHS 8-String Boomers deliver everything you love about the 6-string sets into lower, detuned territory! String Sizing 1-E: 011 2-B: 015 3-G: 018 4-D: DY28 5-A: DY38 6-E: DY48 7-B: DY64 8-F#: DY85