Adam Lavine Electric Guitar Strings by First Act - AL650 Fresh strings for fresh sound. These long-lasting, professional quality electric guitar strings offer players an easy, great feel. Popular extra light gauge (.009-.042) strings have nickel-plated steel-wound hexagonal cores for brilliant tone. Long-lasting, professional quality electric guitar strings Easy, great feel Popular extra light gauge (.009-.042) strings have a little extra punch and easy to play Nickel-plated steel winds and steel hexagonal cores for brilliant tone