Dunlop Heavy Core Strings are made with great pride in Benicia, California and specially designed for the player that plays in dropped or lowered tunings. They incorporate 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. Performance+ Strings are designed with you in mind. They strike the perfect balance between tension and flexibility and project the full tonal complement of the electric guitar. Whatever your style and whatever your rig, Performance+ Strings give you what you need to focus on the music. As with everything we make, we started from scratch and designed Dunlop Strings from the ground up to fit our vision of what a string should be. Each of our formulas is developed with on-the-road feedback from some of the greatest players in the world. At our headquarters in Benicia, California, we take a hands-on approach, running our machines at a slower pace and producing smaller batches, which allows us much more control at every step of the process. We also seal them in a protective bag for freshness and longevity. Every set of Dunlop Strings is the result of our obsession with details, which is ultimately an obsession with quality, consistency, and serving your needs as a player. Inside each pack of Dunlop Strings is more than 50 years of deep knowledge and experience gained from working with guitar players to further their playing experience.