DR NMR-45 Sunbeam .045-.105 Medium. Sunbeams are another step forward on a continuing path for players who constantly seek to upgrade their skills and tools to achieve musical satisfaction. Sunbeams are the next generation of nickel-plated bass strings as they are wound on round cores. Sunbeams are a step forward for the traditional player and the advanced exponent of fretless bass player, both of whom want brightness and warmth. • MFSKU NMR-45 • UPC 600781000338