Extra light 6 string set for electric guitar from Big Core Nickel Rockers series that was designed by Rene Martinez, guitar technician that worked for some of the biggest names in the music industry, including Carlos Santana, Steve Ray Vaughn, or Prince. Strings are designed for maximum feel, balance and endurance. Wound strings are structured with a bigger core and nickel wrap of the highest quality, plain strings are slightly bigger also, to best retain size and durability. Gauges: .0095, .0115, .016, .025, .033, .042.