HI-DEF NEON Colored Acoustic Guitar Strings: Extra Light 10-48 Designed to give your stage presence a little extra pop, especially under UV black lighting K3 Luminescent Neon Blue Coated Phosphor Bronze. Hexagonal Core Wire with Ball�End.� Super bright colors that will sound clear, bright and musical and last long 10, 14, 22, 30, 38, 48 Set of Six Strings Made in US, New Jersey by DR Music Inc Free Replacement against manufacturing defects only for the products imported by Trimac Products Private Limited contact