GHS M3045-F (45-105) FLEA Flea uses the tried and true formula of the GHS Bass Boomers that the world has counted on for decades. GHS Bass Boomers are a Nickel-Plated Steel wrap wire with a special combination of Stainless Steel and Nickel Plate on the low E string. The unique Boomers hex core give this string added strength. The Red Hot Chili Peppers count on Flea to provide that hard driving bottom end and these strings are a crucial part of that signature sound.ABOUT GHS STRINGSGHS Strings are manufactured in a state-of-the-art, climate controlled facility using precision equipment and only the purest of materials. The air-tight Fresh Pack locks in factory freshness that endures the test of time and locks out corrosion. When you buy GHS strings you get quality, consistency, lasting intonation and superbly harmonious sound! GHS Strings – The String Specialists since 1964.M3045F Set: DYB45-DYB65-DYB85-DYB105