The latest addition to Dunlop Heavy Core® electric guitar strings series is our Heavy Core 7 String set. Our Seven String set gauge was specifically designed for definition, tonal balance and superior intonation when playing in dropped or lowered tuning styles. Heavy Core Seven incorporates a unique core wire and proprietary wrap ratios to offer players the ability to really "dig in" while retaining a tight low end, focused midrange and smooth top-end when playing clean or distorted. Great for standard B, B with dropped A, 1/2 step and B Flat tunings and can also be used with a baritone guitar. Baritone players will feel right at home using Heavy Core 7's six lower strings for their instruments and saving the high E (.010) as a back up for one of their six string electrics. The next time you open up a pack of Dunlop guitar or bass strings, you will notice we’ve done away with the plastic bag and desiccant pack in favor of new VCI (Vapor Corrosion Inhibitor) paper envelopes. These envelopes have VCI technology built into the paper itself, creating a barrier of protection around the string and keeping out moisture and rust. VCI is invisible and leaves no trace on the string. Dunlop Strings come out of the package as fresh as the day they were made.