After years using Optima (formerly Maxima) strings, Brian May has finally decided upon his ideal gauge! These strings are 24 Carat Gold Plated as per the other sets in the Optima Gold range. 5% Discount on 5 sets or more 10% Discount on 10 sets or more. The String Gauges are E .009 B .011 G .016 D .024 A .032 E .042