GHS Boomer 7-String Custom Light Electric Guitar Set (9-62) Boomer 7-String Custom Light Electric Guitar Set (9-62) Modern guitarists are tuning lower and lower, adding more strings for a broader tonal spectrum Designed with the help of many "extended range" guitarists, these 7-String Boomers sets bring what you love about our 6 string sets into lower, uncharted territory Gauges: 9-11-16-26-32-44-62 Modern guitarists are tuning lower and lower, adding more strings for a broader tonal spectrum Designed with the help of many "extended range" guitarists, these 7-String Boomers sets bring what you love about our 6 string sets into lower, uncharted territory