Custom ‘XX’ heavy 6 string hand-made set for electric guitar from Drop-Down Tuning series that provides incredible stability even when tuned down or after changing tunings, and allows for delivering clear, in-tune notes even at lower pitch. Strings were designed over a two year build and test period and maintain their intonation at lower tunings far better than most of the strings on market. Strings are made with steel hexagonal cores and nickel-plated steel (NPS) round windings. Gauges: .012, .016, .020, .038, .052, .060.