These seem to be the strings that Brian uses on his electric guitar in more recent years. The set carries Brian’s name in the branding, which means it’s the official signature set.
The strings measure: .009, .011, .016, .024, .032, .042. – which is a significant step up compared to the old Rotosound strings that he used in the past.
The company that makes these strings was at one point called Maxima.