The world's first coating that is unapologetic and offers no excuses for underdelivering on sound quality equal to uncoated strings, the DR Neon strings use remarkable proprietary K3 technology to achieve greater volume, less unwanted harmonics, and increased clarity and articulation than traditional uncoated strings. All this, and they still boast the same protection from corrosion and sweat, along with the increased tonal life that coated strings are loved for. Features Round Core Wire - Highly flexible and musical! Silver-Plated Nickel-Plated Steel Wrap Wire - For maximum output and durability! Neon Coating on Wrap Wire Only -  Maintains string brightness and extended life! Made in the USA - With Only American Materials DR Strings are proudly made in Westwood, New Jersey. We use only the finest American made materials, starting with the core and wrap wire, to the ball ends, to the final packaging. When someone sees the DR logo, that is what they are getting, the best of everything. String Sizing G - 45 D - 65 A - 85 E - 105